BMW Coilovers for Street Use

BC Racing DS Series Coilover Suspension Kit - BMW F34 328i RWD ...

T#:46753524

Part#: I-95-DS

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$ 1,415.00 USD

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$ 1,415.00 USD

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The DS series from BC racing offers increased control and feedback for those looking to achieve the best driving experience possible. Digressive Valving means the shock is firmer at low speed, while transitioning to a softer and more linear feel as (shaft) speed increases. This leads to a much more planted and controlled feeling in the chassis, increased feedback through the wheel, and a slight drop in passenger comfort.

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BC Racing DS Series Coilover Suspension Kit - BMW F26 X4 xDrive ...

T#:36811825

Part#: I-66-DS

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$ 1,395.00 USD

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$ 1,395.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing BR Series Coilover Suspension Kit - 2014-2022 BMW i3 ...

Custom built to order - 3-4 week estimated lead time

T#:4042154

Part#: I-91-BR

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$ 1,195.00 USD

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$ 1,195.00 USD

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The BC Racing BR Series offers the most affordable entry into coilover suspension without sacrificing performance, comfort, build quality, vehicle height, or handling. This is done by extensively testing each vehicle then refining the coilover characteristics as many times as needed to ensure the most well-balanced and affordable aftermarket suspension conceivable. BC Racing takes great pride in choosing spring rates for our off-the-shelf kits that strike the perfect balance between comfort and performance so you're never stuck with an oversprung suspension like many other brands sell. BC Racing offers one of the widest ranges of damping adjustment with 30-clicks of compression/rebound adjusted simultaneously on the BR Series. With meticulously chosen spring rates, damper valving, and one of the widest adjustment ranges in the industry, you can't go wrong with the BC Racing BR Series Coilover System.

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BC Racing BR Series Coilover Suspension Kit - BMW E93 M3 without EDC ...

T#:46409681

Part#: I-154-BR

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$ 1,215.00 USD

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$ 1,215.00 USD

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Looking for coilovers that will provide reliability on street-driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you.

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BC Racing DS Series Coilover Suspension Kit - F15 X5, F16 X6 (With St...

T#:47439366

Part#: I-74-DS

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$ 1,415.00 USD

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$ 1,415.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing BR Series Coilover Suspension Kit - BMW G26 M440i xDrive ...

T#:46409683

Part#: I-151-BR

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$ 1,215.00 USD

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$ 1,215.00 USD

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Looking for coilovers that will provide reliability on street-driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you.

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AST 5200 Series Coilovers - E9X M3

T#:24643799

Part#: RIV-B1603SD

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$ 6,010.00 USD

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$ 6,010.00 USD

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BC Racing BR Series Coilover Suspension Kit - U11 X1 FWD

T#:51356033

Part#: I-119-RM

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$ 1,515.00 USD

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$ 1,515.00 USD

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For the serious enthusiast, the BC Racing DS Series for the U11 BMW X1 FWD offers a "no-compromise" approach to suspension geometry and thermal stability. By utilizing high-strength SAE9254 cold-wound steel springs, this system provides a highly consistent spring rate that resists deformation even under heavy, long-term use. The digressive damping architecture is specifically tuned to stabilize the X1's high center of gravity, providing a "planted" car-like feel that inspires confidence on technical roads. Every DS Series kit is hand-assembled and fully rebuildable, featuring bearing-mounted spring platforms to eliminate "spring binding" or popping noises during low-speed steering maneuvers. Key Features: Enhanced Body Control: Targeted damping profile specifically reduces the "wallow" associated with factory SUV suspension. Camber Adjustable Top Mounts: Precision-engineered aluminum alloy plates provide unmediated feedback and allow for aggressive alignment specs. Patented Locking Ring: Features a concave lower locking ring that prevents the system from vibrating loose under intense conditions. Thermal Management: Mono-tube architecture and high-quality fluid ensure the valving remains consistent during aggressive driving sessions. Serviceable Construction: All components are individual and replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2022+ BMW X1 (U11) Front-Wheel Drive (FWD). Spring Rates (Default): Front: 5.5 kg/mm | Rear: 6.5 kg/mm. Damping Architecture: 1-Way Adjustable (30 Clicks). Build Material: TIG-welded heavy-gauge steel and CNC-machined aluminum. Warranty: 1-Year limited manufacturer's warranty.

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BC Racing ZX Series Coilover Suspension Kit - E46 M3 Convertible ...

T#:51356016

Part#: I-121-ZX

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$ 2,595.00 USD

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$ 2,595.00 USD

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For the E46 M3 Convertible enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ZX Series offers an unparalleled engineering approach. By moving the compression valving to the external canisters, the system maintains its integrity under high-stress, high-temperature conditions, effectively eliminating "damper fade." For the E46 M3 platform—especially the convertible which requires higher roll stiffness to compensate for chassis flex—the ZX Series' 12kg rear spring rate and advanced damping provide the stability needed to maintain a flat cornering attitude. The system features standard front pillowball camber plates to eliminate factory rubber "mush," providing direct and unmediated steering feedback to the driver. Key Features: Enhanced Thermal Management: External canisters keep fluid away from brake heat to maintain valving accuracy lap after lap. Camber Adjustable Top Mounts: High-quality aluminum alloy plates allow for aggressive track alignments to maximize the tire contact patch. Pillowball Rear Mounts: Replaces rubber bushings with solid spherical bearings (on applicable kits) for increased response and precision. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme track vibration. Fully Rebuildable: Every component is individual and replaceable, making this a long-term investment in the car's competitive potential. Specifications: Vehicle Fitment: 2000–2006 BMW M3 Convertible (E46 Chassis). Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm (Swift Springs standard). Piston Design: Linear Twin-Piston with remote canister valving. Adjustment Range: 3-Way Independent (Rebound / Low-Speed Compression / High-Speed Compression). Warranty: 1-Year limited manufacturer's warranty.

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BC Racing DS Series Coilover Suspension Kit - G30 AWD

T#:51355985

Part#: I-131-DS

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$ 1,415.00 USD

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$ 1,415.00 USD

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For the BMW G30 owner looking to eliminate the "wallow" of factory suspension, the BC Racing DS Series offers a professional-grade motorsport approach. Built from TIG-welded 304 stainless steel and heavy-duty aluminum, this system is designed to withstand the rigors of high-intensity driving. The DS Series includes high-strength SAE9254 cold-wound steel springs, which have been tested through over 500,000 cycles with less than 5% deformation. By moving the secondary damping piston to the digressive valving architecture, the system provides a sharper turn-in and more direct steering feedback. Every DS Series kit is hand-assembled and fully rebuildable, ensuring it remains a long-term performance investment for your BMW. Key Features: Enhanced Chassis Poise: Digressive damping curve specifically combats the weight of the G30 chassis during spirited driving. Pillowball Top Mounts: High-quality aluminum alloy mounts provide direct feedback and eliminate factory rubber compliance. Patented Locking Ring: Features a concave lower locking ring that prevents the system from vibrating loose even under track conditions. Bearing-Mounted Spring Platforms: Minimizes "spring binding" or popping during low-speed steering maneuvers. Customization Ready: Fully compatible with custom spring rates and Swift Spring upgrades for tailored track setups. Specifications: Vehicle Fitment: 2017–2023 BMW 5-Series (G30) Sedan AWD / xDrive. Spring Rates (Default): Front: 9 kg/mm | Rear: 4.2 kg/mm. Adjustability: Independent ride height, independent spring preload, and 30-way damping. Maintenance: Fully rebuildable with all replacement parts readily available. Warranty: 1-Year limited manufacturer's warranty.

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Front Drop Links - Set 258mm to 276mm

T#:31522875

Part#: DLA-MINF-S

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$ 494.99 USD

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$ 494.99 USD

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BR Series Coilover Suspension Kit - E91 Touring AWD

T#:50731697

Part#: I-148-BR

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$ 1,215.00 USD

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$ 1,215.00 USD

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Affordable, adaptable, and built with the enthusiast in mind, the BC Racing BR Series is a proven gateway into true coilover performance. Every application benefits from extensive chassis testing and continual refinement, resulting in a setup that delivers control, confidence, and everyday usability right out of the box. Instead of relying on overly stiff spring packages, BC focuses on rates that improve handling while keeping the car livable. Matched with carefully developed damper valving, the ride feels composed and predictable rather than harsh. A mono-tube design helps control heat and maintain consistent damping under demanding conditions. The linear piston profile provides transparent feedback as grip builds, and independent ride height adjustment allows changes to stance without sacrificing travel or upsetting balance. With 30 clicks of simultaneous compression and rebound adjustment, you get a huge range of tuning—from comfortable daily duty to focused performance driving in just seconds. Key Features Highly configurable setup 6.5KG front / 10KG rear spring rates Mono-tube damper construction Linear piston and damping curve Independent ride height adjustment 30-position compression/rebound tuning Front camber plates on applicable kits Rear camber solutions for select vehicles Custom spring rates and Swift compatibility Optional custom valving Fully rebuildable Supported by a 2-year manufacturer warranty

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ZX Series Coilover Suspension Kit - E46 Convertible

T#:51320859

Part#: I-90-ZX

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$ 2,565.00 USD

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$ 2,565.00 USD

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For the E46 Convertible enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ZX Series offers an unparalleled engineering approach. By moving the compression valving to the external canisters, the system maintains its integrity under high-stress, high-temperature conditions, effectively eliminating "damper fade." For the E46 Convertible—which lacks the structural rigidity of its coupe counterparts—the ZX Series' advanced damping provides the stability needed to maintain a flat cornering attitude. The system features bearing-mounted spring platforms to eliminate "spring binding" or popping during tight maneuvers. Fully rebuildable and customizable, the ZX Series is a long-term investment in the competitive potential of your BMW. Key Features: Enhanced Thermal Management: External canisters keep fluid away from brake heat, maintaining valving accuracy lap after lap. Camber Adjustable Top Mounts: High-quality aluminum plates eliminate factory rubber "mush," providing direct, unmediated steering feedback. Independent Ride Height: Threaded bottom mounts allow for ride height changes without sacrificing suspension travel or preload. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme track vibration. Custom Valving Available: Each kit can be custom-valved to match specific driver preferences or extreme aero/tire setups. Specifications: Vehicle Fitment: 2000–2006 BMW 3-Series (E46) Convertible (Excludes M3 models). Spring Rates (Default): Front: 6 kg/mm | Rear: 10 kg/mm (Swift Springs standard). Spring Type: Genuine Swift Springs for reduced unsprung weight. Piston Design: Linear Twin-Piston with remote canister valving. Warranty: 2-Year limited manufacturer's warranty.

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BC Racing BR Series Coilover Suspension Kit - 3-Bolt Front Mounts - B...

T#:36981072

Part#: I-114-BR

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$ 1,195.00 USD

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$ 1,195.00 USD

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The BC Racing BR Series offers the most affordable entry into coilover suspension without sacrificing performance, comfort, build quality, vehicle height, or handling. This is done by extensively testing each vehicle then refining the coilover characteristics as many times as needed to ensure the most well-balanced and affordable aftermarket suspension conceivable. BC Racing takes great pride in choosing spring rates for our off-the-shelf kits that strike the perfect balance between comfort and performance so you're never stuck with an oversprung suspension like many other brands sell. BC Racing offers one of the widest ranges of damping adjustment with 30-clicks of compression/rebound adjusted simultaneously on the BR Series. With meticulously chosen spring rates, damper valving, and one of the widest adjustment ranges in the industry, you can't go wrong with the BC Racing BR Series Coilover System.

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BC Racing ZR Series Coilover Suspension Kit - E46 Convertible ...

T#:51320857

Part#: I-90-ZR

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$ 2,865.00 USD

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$ 2,865.00 USD

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Designed for racers ranging from novice to pro, the BC Racing ZR Series addresses the unique weight distribution and chassis requirements of the E46 Convertible. The inverted front struts utilize a massive 42mm piston shaft, providing a rigid backbone that prevents geometry deflection under heavy braking and high-G cornering. By separating low-speed and high-speed compression, drivers can stiffen low-speed damping to eliminate body roll and pitch during turn-in while keeping high-speed damping compliant enough to absorb track curbing without upsetting the chassis. Every ZR kit is hand-assembled with TIG-welded steel and anodized 6061-T6 aluminum, providing a professional-grade motorsport component that is fully rebuildable and customizable. Key Features: Enhanced Low-Speed Damping: Specifically tuned to stabilize the E46’s heavier convertible chassis during quick weight transitions. Thermal Management: Remote-mounted external reservoirs move fluid away from hot brake components to ensure consistent lap times. Camber Adjustable Top Mounts: High-quality aluminum plates eliminate factory rubber "mush," providing direct, unmediated steering feedback. Bearing-Mounted Spring Platforms: Minimizes friction between the spring and perch to eliminate "spring binding" during tight steering. Industrial Corrosion Protection: Black chrome-plated steel shock bodies and electrophoretic disposition on steel mounts ensure a long service life. Specifications: Vehicle Fitment: 2000–2006 BMW 3-Series (E46) Convertible (All models except M3). Spring Rates (Standard): Front: 6 kg/mm | Rear: 10 kg/mm (Swift Springs). Piston Design: Linear Twin-Piston (Standard on 3-way kits). Weight: Approx. 23 kg (Full Kit). Warranty: 2-Year limited manufacturer's warranty.

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BC Racing HM Series Coilover Suspension Kit - 5-Bolt Top Mounts - 201...

T#:47439396

Part#: I-68-HM

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$ 2,565.00 USD

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$ 2,565.00 USD

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The BC Racing HM Series Coilover System gets its great qualities from a combination of two previous BC Racing Coilover Systems - the RM Series and ER Series. The HM Series uses an inverted mono-tube damper, just like the RM Series, but adds the independent compression and rebound adjustment of the ER Series. Each HM Series Coilover System uses inverted mono-tube dampers front and rear on McPherson strut vehicles with steel braided lines leading from the top of the damper to the external reservoirs. The external reservoirs allow for a higher oil capacity with the added benefit of increased thermal dissipation, they also house the secondary damping piston. For Subarus and other McPherson suspension vehicles that are heavily tracked, the BC Racing HM Series Suspension System is definitely worth checking out!

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BC Racing ER Series Coilover Suspension Kit - E82 128i 135i

T#:47439380

Part#: I-11-ER

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$ 1,955.00 USD

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$ 1,955.00 USD

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The BC Racing ER Series Coilover System is the next evolution in your suspension tuning and vehicle setup needs. The ER Series offers 30-clicks of independently adjustable compression and rebound with remote reservoirs to increase oil capacity and help with faster heat dissipation. Each ER Series Coilover System undergoes the same rigorous testing and development as the coilover series that precede it, with the addition of more extensive real-world track testing. For racers and enthusiasts that are looking for more adjustability in terms of varying compression and rebound settings, look no further than the BC Racing ER Series Coilover System.

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BC Racing RM Series Coilover Suspension Kit - 3-Bolt Top Mounts - F32...

T#:47439431

Part#: I-61-RM

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$ 1,515.00 USD

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$ 1,515.00 USD

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The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The BC Racing RM Series Coilover System uses a much larger inverted piston shaft that can handle higher lateral loads for longer periods of time without fatigue. These higher lateral loads are only prevalent on McPherson style strut suspension, not on Double A-Arm vehicles.

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BC Racing DS Series Coilover Suspension Kit - F10 5-Series (AWD) ...

T#:36981066

Part#: I-105-DS

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$ 1,395.00 USD

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$ 1,395.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing DS Series Coilover Suspension Kit - 3-Bolt Top Mounts - BMW...

T#:47439375

Part#: I-29-DS

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$ 1,415.00 USD

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$ 1,415.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BR Series Coilover Suspension Kit - F66 MINI Cooper

T#:46924980

Part#: T-11-BR

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$ 1,215.00 USD

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$ 1,215.00 USD

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BC Racing DS Series Coilover Suspension Kit - BMW G20 330i M340i RWD ...

T#:47439432

Part#: I-96-DS

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$ 1,445.00 USD

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$ 1,445.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing RM Series Coilover Suspension Kit - 5-Bolt Top Mounts - F30...

T#:47439398

Part#: I-82-RM

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$ 1,515.00 USD

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$ 1,515.00 USD

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The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The BC Racing RM Series Coilover System uses a much larger inverted piston shaft that can handle higher lateral loads for longer periods of time without fatigue. These higher lateral loads are only prevalent on McPherson style strut suspension, not on Double A-Arm vehicles.

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AST 5300 Series Coilovers - E9X M3

T#:24643800

Part#: RAC-B1603SD

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$ 7,209.00 USD

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$ 7,209.00 USD

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BC Racing DS Series Coilover Suspension Kit - E89 Z4

T#:51356035

Part#: I-111-DS

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$ 1,415.00 USD

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$ 1,415.00 USD

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For the serious BMW enthusiast, the BC Racing DS Series for the E89 Z4 offers a "no-compromise" approach to suspension geometry and thermal stability. By utilizing high-strength SAE9254 cold-wound steel springs, this system provides a highly consistent spring rate that resists deformation over long-term use. The digressive damping architecture is specifically tuned to stabilize the Z4’s low-slung chassis, providing sharp turn-in and unmediated steering feedback. Every DS Series kit is hand-assembled and fully rebuildable, featuring bearing-mounted spring platforms to eliminate "spring binding" or popping noises during low-speed maneuvers. Key Features: Enhanced Body Control: Targeted damping profile specifically reduces the "wallow" and float associated with factory suspension. Pillowball Top Mounts: High-quality aluminum alloy mounts provide direct driver feedback and eliminate factory rubber compliance. Patented Locking Ring: Features a concave lower locking ring that prevents the system from vibrating loose even under track conditions. Customization Ready: Fully compatible with custom spring rates and Swift Spring upgrades for tailored track setups. Fully Rebuildable: All components are individual and replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2009–2016 BMW Z4 (E89). Spring Rates (Default): Front: 5.5 kg/mm | Rear: 9 kg/mm. Hardware: Black chromed steel shock bodies with anodized 6061-T6 aluminum components. Damping Range: 30-Way Simultaneous (Compression/Rebound). Build Type: Hand-assembled with 1.5mm wall thickness TIG-welded brackets.

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BC Racing HM Series Coilover Suspension Kit - E46 M3 Convertible ...

T#:51355994

Part#: I-121-HM

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$ 2,565.00 USD

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$ 2,565.00 USD

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For the E46 M3 Convertible owner who demands uncompromised geometry control, the BC Racing HM Series offers a motorsport-first engineering solution. By utilizing an inverted strut layout with a much larger internal piston shaft, the HM Series excels in maintaining wheel alignment during extreme lateral cornering—a critical factor for the MacPherson strut-equipped M3. The addition of external reservoirs ensures the damping fluid remains cool, preserving valving accuracy lap after lap. Standard front pillowball camber plates eliminate factory rubber "mush," providing direct and unmediated steering feedback. Because convertibles often require higher roll stiffness to compensate for chassis flex, the HM Series’ 12kg rear spring rate provides the stability needed to keep the car planted and responsive. Key Features: Enhanced Side-Load Resistance: The inverted design handles high lateral loads longer than traditional upright dampers without fatigue. Reduced Damper Fade: External canisters move fluid away from brake heat to maintain consistent lap times. Camber Adjustable Top Mounts: Precision-engineered aluminum plates allow for surgical alignment and increased turn-in bite. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked even under track conditions. Fully Rebuildable: All components are individual and replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2000–2006 BMW M3 Convertible (E46 Chassis). Spring Rates (Standard): Front: 8 kg/mm | Rear: 12 kg/mm (Swift Springs). Hardware: Black chrome-plated steel shock bodies and 6061-T6 aluminum components. Adjustment Type: Independent ride height, spring preload, and 2-way damping. Warranty: 1-Year limited manufacturer's warranty.

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BC Racing RM Series Coilover Suspension Kit - 5-Bolt Top Mounts - 201...

T#:47439395

Part#: I-68-RM

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$ 1,515.00 USD

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Qty

$ 1,515.00 USD

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The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The BC Racing RM Series Coilover System uses a much larger inverted piston shaft that can handle higher lateral loads for longer periods of time without fatigue. These higher lateral loads are only prevalent on McPherson style strut suspension, not on Double A-Arm vehicles.

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BC Racing DS Series Coilover Suspension Kit - 3-Bolt Top Mounts - F32...

T#:47439430

Part#: I-61-DS

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$ 1,415.00 USD

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Qty

$ 1,415.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing BR Series Coilover Suspension Kit - BMW E88 128i 135i ...

T#:46409684

Part#: I-149-BR

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$ 1,215.00 USD

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$ 1,215.00 USD

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Looking for coilovers that will provide reliability on street-driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you.

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F31 328i xDrive KW Coilover Kit - Variant 1 (V1)

T#:339944

Part#: 1022000ABX

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Starting at $ 2,384.00 USD

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Starting at $ 2,384.00 USD

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Factory Pre-set Damping

The Variant 1 is KW's basic simple and effective coil over kit that is still packed with lots of features -

Pre-set damping optimized for a blend of ride comfort and handling with less bodyroll than the standard suspension,

Stainless steel strut/shock bodies and composite spring perches for superior corrossion resistance,

Individually height-adjustable - Front = 25-50mm lowering; Rear = 30-55mm lowering,

TUV approved lowering range and operation,

Expert engineering and design for ease-of-use and long durability,
This is the ideal coil over kit for a F31 328i xDrive Wagon owner who does not plan on tracking or autocrossing the car and just wants a lower, more aggressive stance and better handling. KW has set the shock damping rates to be an excellent balance for a smooth yet taut ride, and to resist bodyroll motions for better handling. The Variant 1 differs from the Street Comfort set in that it has stiffer springs and revised shock settings. If you want a sportier ride and better handling than stock the Variant 1 is an excellent choice.

Coil over suspensions are better engineered suspension options compared to a standard shock + spring package. Since the springs and shocks in a coil over are designed by a team of engineers to work together, there is much better suspension travel and more precisely tuned specifications for spring and shock rates. Using separate shock and spring specs may result in premature coil bind or shock bottoming. And most coil over kits offer more features than the traditional packages. Coil overs are also more useful when larger wheels/tires are used because you can precisely set the ride heights to clear the new tires.

Fitment Note: Wheel spacers may be required depending on wheel/tire sizing and ride height setting.
Cars with the factory EDC electronic adjustable shocks must have the system disabled with the optional KW EDC Cancellation Kit (or similar). This is a direct fit for cars without EDC.

Lifetime warranty!

These KW Variant 1 coil overs fit the following BMWs:
2012+ F31 BMW 328i xDrive - Wagon

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KW Coilover Kit - Clubsport - F22 228i - 3 Bolt Mount

T#:338396

Part#: TMS338396

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Starting at $ 4,584.00 USD

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Starting at $ 4,584.00 USD

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Adjustable Rebound & Compression Damping, Front Camber Plates & Stiffer Springs

Must have 3 Bolt Upper Strut Mount

KW Clubsport coilovers was developed for F22 M235i Coupe owners who demand a better handling car when participating in track day events, but also require a setup that could be used every day. The Clubsport was specifically designed for the Nordschleife using track day tires. By using the adjustable camber mounts, the suspension geometry can be adjusted to the requirements of tires and the intended use. The mentioned adjustment options combined with the independently adjustable rebound and compression damping technology allow a suspension setup according to the vehicle load, tire characteristics and different track conditions. KW Clubsport meets every demand regarding a coilover for the usage on the road and the race track.

KW Clubsport suspension kits are independently adjustable in compression and rebound and include high performance racing springs. Racing front camber plates are included for further performance. KW Clubsport guarantees excellent handling, best performance, highest agility and fantastic lap times.

Height adjustable coilovers - Front - 40-65mm, Rear - 30-60mm

Performance setup for the racetrack

Dampers in compression & rebound forces independently adjustable

Use of high performance linear race springs: Front 457 lbs/inch, Rear 685 lbs/inch.

Stainless steel technology "inox-line"

Includes front camber plate mounts
Fitment Note: Wheel spacers may be required depending on wheel/tire sizing and ride height setting.
EDC must be disabled using the included KW EDC Cancellation Kit or a similar unit. This is a direct install for cars without the factory EDC.

Choose:
2-way (Rebound/Compression) adjustable shocks
or
3-way(Rebound/Low-Speed Compression/High-Speed Compression).

KW Clubsport Development and Testing

This item fits the following BMWs:
2014-1/2015 F22 BMW 228i M235i

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DS Series Coilover Suspension Kit - 55mm Front Strut (Weld-In) - E34 ...

T#:47439370

Part#: I-28-DS

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$ 1,415.00 USD

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$ 1,415.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing HM Series Coilover Suspension Kit - 3-Bolt Top Mounts - BMW...

T#:47439377

Part#: I-29-HM

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$ 2,565.00 USD

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$ 2,565.00 USD

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The BC Racing HM Series Coilover System gets its great qualities from a combination of two previous BC Racing Coilover Systems - the RM Series and ER Series. The HM Series uses an inverted mono-tube damper, just like the RM Series, but adds the independent compression and rebound adjustment of the ER Series. Each HM Series Coilover System uses inverted mono-tube dampers front and rear on McPherson strut vehicles with steel braided lines leading from the top of the damper to the external reservoirs. The external reservoirs allow for a higher oil capacity with the added benefit of increased thermal dissipation, they also house the secondary damping piston. For Subarus and other McPherson suspension vehicles that are heavily tracked, the BC Racing HM Series Suspension System is definitely worth checking out!

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BC Racing RM Series Coilover Suspension Kit - BMW E91 E93 Non-M RWD ...

T#:47439405

Part#: I-17-RM

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$ 1,515.00 USD

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$ 1,515.00 USD

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The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The BC Racing RM Series Coilover System uses a much larger inverted piston shaft that can handle higher lateral loads for longer periods of time without fatigue. These higher lateral loads are only prevalent on McPherson style strut suspension, not on Double A-Arm vehicles.

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RM Series Coilover Suspension Kit - E46 Convertible

T#:51320850

Part#: I-90-RM

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$ 1,515.00 USD

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$ 1,515.00 USD

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For the E46 Convertible enthusiast who demands uncompromised feedback, the BC Racing RM Series offers a professional-grade solution. By moving the oil reservoir away from the wheel hub and brake components, the RM Series manages heat more effectively, preventing "damper fade" during long track sessions. The inclusion of front pillowball camber plates eliminates the compliant factory rubber bushings, providing direct and unmediated steering feel. Because convertibles often suffer from chassis flex, the RM Series' ability to maintain a flat cornering attitude through its stiff 12kg rear spring rate and robust inverted front struts makes it a transformative upgrade for the E46 platform. Key Features: Enhanced Thermal Management: Inverted layout moves fluid away from brake heat to maintain consistent damping performance. Camber Adjustable Top Mounts: Precision-engineered aluminum plates allow for aggressive alignment specs to maximize front-end grip. Patented Concave Locking Ring: Unique design ensures that once ride height is set, the lower mounts remain locked securely. TIG-Welded Durability: High-strength steel shock bodies with a black chrome finish for maximum corrosion resistance. Fully Rebuildable: Every component is individual and replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2000–2006 BMW 3-Series (E46) Convertible (Excludes M3). Spring Rates (Default): Front: 6 kg/mm | Rear: 12 kg/mm. Damping Curve: Linear. Construction: Heavy-duty steel and 6061-T6 aluminum. Warranty: 2-Year limited warranty against manufacturer's defects.

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BC Racing DS Series Coilover Suspension Kit - E60 525xi 528xi 530xi 5...

T#:47439426

Part#: I-86-DS

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$ 1,415.00 USD

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$ 1,415.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing BR Series Coilover Suspension Kit - F01 740i 750i

T#:555816

Part#: I-73-BR

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$ 1,195.00 USD

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$ 1,195.00 USD

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Looking for coilovers that will provide reliability on street driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you.

BR Series coilovers are the most popular and versatile option offered by BC racing, offering features such as 30-level dampening adjustment (simultaneous compression and rebound control), linear springs where possible, and a minimum of 2 inches ride height drop. To ensure performance, comfort, and quality, all BR Series kits are Dyno tested during the design stage to determine the best valving and spring rates, then installed and tested for a minimum of 6 months. This kit features mounts and brackets that are fully compatible with all stock mounting points and components.

The upper shock/strut mounts are all constructed of 6061-T6 Aluminum for strength and weight savings. BC Racing design 1 of 3 types of upper mounts for each vehicle: Caster/Camber Plates (+/- 3* camber), Camber Plates (+/- 3* camber), and Rubber Mount Plates (NVH reduction). The included mount option for this kit is shown in the kit specs and features below.

Lower shock mounts are powder coated for corrosion protection and constructed of either 6061-T6 aluminum that has been milled from a single piece (fork or bolt eye mount) or of STKM13C steel with all brackets welded robotically.

The included springs come in one of 3 styles: linear, S-barrel, and V-barrel. Linear springs are used in most applications unless limited by the OE design that does not allow the use of linear springs. All spring options are made from SAE9254 steel and have a zinc coating applied under the powder coating for increased spring corrosion protection and long term reliability.

All shock bodies used in the BR Series coilovers use a 53mm shock body (unless noted otherwise) for added strength, performance, and increased fluid capacity. All shocks are then powder coated black chrome for clean styling and corrosion protection.

Specs and Features:

12k Front & 4.5k Rear Spring Rate
Linear front & V-Barrel rear springs
Valved specifically to spring style and rate
Aluminum and Rubber Front Mounts
Aluminum and Rubber Rear Mounts
Black Powder Coated Components
All OE style brackets and mounting for perfect fit
30 Levels of Simultaneous Compression and Rebound Dampening
2 inch minimum and 3+ Inches of total potential drop
Great for Track, Street, and any other conditions

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BR Series Coilover Suspension Kit

For GT RWD model 5-series

T#:50731692

Part#: I-110-BR

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$ 1,215.00 USD

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$ 1,215.00 USD

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If you’re looking for a suspension package that can handle daily driving, spirited back roads, and regular track time without compromise, the BC Racing BR Series has earned its reputation for a reason. It delivers broad adjustability, dependable construction, and chassis-specific tuning at a price point that continues to make sense for enthusiasts. Designed to integrate with factory mounting locations, the BR Series installs cleanly using OE-style brackets and hardware. Each damper is hand assembled and dyno tested, then paired based on matched compression and rebound values to ensure consistent performance from side to side. Spring rates and internal valving are selected following extensive R&D and long-term evaluation to balance ride quality with capability. Damping changes are made through a single adjuster offering 30 positions of simultaneous compression and rebound, giving you a wide operating window from comfortable street manners to firm, controlled response during aggressive driving. This configuration includes a 10K front spring rate with an S-barrel front spring where packaging requires it, paired with a linear rear arrangement for predictable, repeatable behavior. Construction highlights 6061-T6 aluminum upper mounts on applicable positions Rubber isolation mounts where reduced NVH is preferred Aluminum or robotically welded steel lower brackets Powder-coated components for corrosion resistance SAE9254 steel springs with protective zinc and powder coating Tuning & fitment 30-way damping adjustment Valving matched to spring design and rate Direct compatibility with OE mounting points and components

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BR Series Coilover Suspension Kit - BMW F48 X1

T#:13266388

Part#: I-106-BR

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$ 1,195.00 USD

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$ 1,195.00 USD

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The BC Racing BR Series offers the most affordable entry into coilover suspension without sacrificing performance, comfort, build quality, vehicle height, or handling. This is done by extensively testing each vehicle then refining the coilover characteristics as many times as needed to ensure the most well-balanced and affordable aftermarket suspension conceivable. BC Racing takes great pride in choosing spring rates for our off-the-shelf kits that strike the perfect balance between comfort and performance so you're never stuck with an oversprung suspension like many other brands sell. BC Racing offers one of the widest ranges of damping adjustment with 30-clicks of compression/rebound adjusted simultaneously on the BR Series. With meticulously chosen spring rates, damper valving, and one of the widest adjustment ranges in the industry, you can't go wrong with the BC Racing BR Series Coilover System.

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BC Racing DS Series Coilover Suspension Kit - BMW F15 X5 xDrive40e ...

T#:47439435

Part#: I-130-DS

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$ 1,415.00 USD

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Qty

$ 1,415.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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BC Racing DS Series Coilover Suspension Kit - E90/E92 325xi 328xi 330...

T#:47439369

Part#: I-113-DS

Back Ordered

$ 1,415.00 USD

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Qty

$ 1,415.00 USD

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BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.

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ER Series Coilover Suspension Kit - E46 Convertible

T#:51320855

Part#: I-90-ER

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$ 1,955.00 USD

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$ 1,955.00 USD

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For the E46 Convertible enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ER Series offers uncompromised performance. By moving the secondary damping piston to the external canister, the system maintains its integrity under high-stress, high-temperature conditions. This is especially beneficial for the E46 Convertible, where the added 12kg rear spring rate helps counteract the platform's inherent weight distribution and chassis flex. The system features bearing-mounted spring platforms to eliminate the friction and "spring binding" often felt during tight steering maneuvers. Every ER Series kit is hand-assembled with precision and is fully rebuildable, ensuring it remains a long-term investment in the performance of your BMW. Key Features: Reduced Damping Fade: Strategic fluid placement keeps oil cooler, preserving valving accuracy during extended spirited driving. Camber Adjustable Top Mounts: High-quality aluminum plates eliminate the "mushy" feel of factory rubber bushings for direct driver feedback. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme vibration. Customization Ready: Fully compatible with Swift Spring upgrades and custom valving tailored to specific tire or aero setups. Serviceable Construction: All components are individual and fully replaceable directly through BC Racing North America. Specifications: Vehicle Fitment: 2000–2006 BMW 3-Series (E46) Convertible (Excludes M3). Spring Rates (Default): Front: 6 kg/mm | Rear: 12 kg/mm. Spring Type: High-strength SAE9254 cold-wound steel. Construction: 304 Stainless Steel and 6061-T6 Anodized Aluminum. Warranty: 2-Year limited manufacturer's warranty.

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BC Racing RM Series Coilover Suspension Kit - E60 525xi 528xi 530xi 5...

T#:47439427

Part#: I-86-RM

Back Ordered

$ 1,515.00 USD

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Qty

$ 1,515.00 USD

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The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The BC Racing RM Series Coilover System uses a much larger inverted piston shaft that can handle higher lateral loads for longer periods of time without fatigue. These higher lateral loads are only prevalent on McPherson style strut suspension, not on Double A-Arm vehicles.

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BC Racing RM Series Coilover Suspension Kit - BMW G29 Z4 RWD ...

T#:47576368

Part#: I-97-RM

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$ 1,515.00 USD

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Qty

$ 1,515.00 USD

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The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The BC Racing RM Series Coilover System uses a much larger inverted piston shaft that can handle higher lateral loads for longer periods of time without fatigue. These higher lateral loads are only prevalent on McPherson style strut suspension, not on Double A-Arm vehicles.

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BC Racing BR Series Coilover Suspension Kit - BMW G60 540i xDrive ...

T#:46409688

Part#: I-141-BR

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$ 1,215.00 USD

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$ 1,215.00 USD

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Looking for coilovers that will provide reliability on street driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you.

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BC Racing ER Series Coilover Suspension Kit - BMW E91 E93 Non-M RWD ...

T#:47439406

Part#: I-17-ER

Back Ordered

$ 1,955.00 USD

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Qty

$ 1,955.00 USD

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The BC Racing ER Series Coilover System is the next evolution in your suspension tuning and vehicle setup needs. The ER Series offers 30-clicks of independently adjustable compression and rebound with remote reservoirs to increase oil capacity and help with faster heat dissipation. Each ER Series Coilover System undergoes the same rigorous testing and development as the coilover series that precede it, with the addition of more extensive real-world track testing. For racers and enthusiasts that are looking for more adjustability in terms of varying compression and rebound settings, look no further than the BC Racing ER Series Coilover System.

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BC Racing ER-Series 12-19 BMW 3 Series Touring (5-Bolt Top Mounts) ...

T#:25009236

Part#: I-115-ER

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$ 1,985.00 USD

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$ 1,985.00 USD

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The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates. By separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tires to maximize grip for the braking effort and also to allow you to trail brake into the corner without the car understeering. Ride height adjustment: Ride height is determined by the position of the coil over bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment. Because ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run. Know your protected from the elements! The damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard. Features: Highly Customizable Mono-Tube Damper Linear Twin-Piston Design Height Adjustment Independent Of Spring Compression 30-Clicks Of Compression Adjustment Via The External Reservoirs 30-Clicks Of Rebound Adjustment From The Top Of The Damper Front And Rear Camber Plates Standard On All Applicable Kits Front And Rear Pillowball Mounts Standard When Camber Plates Do Not Apply Custom Spring Rates And Swift Spring Compatible Custom Valved To Match The Drivers Requested Spring Rates Swift Spring Upgrade Available On Most Applications 1-Year Warranty Against Manufacturers Defect Fully Rebuildable NOTE: LEAD TIMES ON ALL NEW ORDERS 4-8 WEEKS

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BC Racing BR Series Coilover Suspension Kit - BMW G16 840i RWD ...

T#:13266389

Part#: I-104-BR

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$ 1,195.00 USD

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$ 1,195.00 USD

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BC Racing has made a name for themselves in the automotive enthusiast communities by developing adjustable, street-and-track capable coilover kits for over a decade that are not only highly effective but also don't break the bank! The BR Series coilover suspension kit features mounting points and brackets that are compatible with all stock mounting locations and components. It is their most popular and versatile suspension setup, offering linear springs (where possible), 30 levels of dampening adjustment including simultaneous compression and rebound control, and a 2-inch minimum ride height drop. All BR Series kits are Dyno tested to determine the best valving and spring rates for each chassis and are tested for a minimum of 6 months before being released to the public to ensure ride quality and reliability. All upper shock and strut mounts are constructed of 6061-T6 Aluminum to ensure a lightweight and incredibly strong design. Front design options include Caster/Camber Plates, Camber plates, and Rubber Mount Plates. See below for the option fitted to your chassis's BR Series Kit. The adjustable plate designs allow for up to 3 degrees of camber adjustment. The Rubber Mount Plates are better for preventing unwanted NVH. Lower shock mounts are either made of 6061-T6 Aluminum just like the top mounts (Fork or Bolt Eye Style Mount) that have been milled from a single piece of material, or high-quality STKM13C steel with all brackets welded robotically. Both styles are then powder coated for corrosion protection and styling. All springs used, linear, S-barrel, and v-barrel, are made of SAE9254 steel and utilize a Zinc coating under a powder coating finish to ensure rust cannot penetrate the metal of the spring and compromise performance or reliability. Liner springs are used in places possible unless otherwise limited by the OE design of the vehicle that does not allow it. In that case, S-Barrel or V-Barrel springs are used to match OE shape/style specifications and the spring's rate is then matched to the linear rate. BC Racing creates their kits utilizing a wide variety of shock types, lengths, and diameters. Each vehicle depending on their data from R&D, and accounting for the OEM suspension design will utilize a different style of shock. Each shock is hand assembled in their factory and dyno tested before use in their kits. Shocks are paired together by their compression and rebound numbers after dyno testing for even and precise quality and performance. Each shock body used in their system is 53mm for added strength, performance, and increased fluid capacity (unless limited spacing will not allow it). The shocks are then coated in black chrome for a clean, cohesive appearance and corrosion resistance. Specs and Features: 8k Front & 5k Rear Spring Rate S-Barrel front & Linear rear springs Valved specifically to spring style and rate Aluminum and Rubber Front Mounts Rear Rubber Mounts Black Powder Coated Components All OE style brackets and mounting for a perfect fit 30 Levels of Simultaneous Compression and Rebound Dampening 2-inch minimum and 3+ Inches of total potential drop Great for Track, Street, and any other conditions

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RM Series Coilover Suspension Kit - F31 (3-Bolt Top Mounts)

For Vehicles With 3-Bolt Top Mounts

T#:51320834

Part#: I-114-RM

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$ 1,515.00 USD

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$ 1,515.00 USD

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For the enthusiast who uses their F31 Touring as both a daily driver and a weekend track tool, the BC Racing RM Series provides unparalleled driver feedback. The inclusion of front pillowball camber plates as standard allows for aggressive alignment settings that sharpen turn-in and eliminate the "mushy" feel associated with OEM rubber mounts. By moving the oil reservoir away from the hub, the fluid stays cooler during spirited sessions, preventing the "damper fade" that often plagues standard suspension setups after consistent hard use. With the RM Series, the BMW F31 gains a level of poise and responsiveness typically reserved for dedicated M-cars. Key Features: Camber Adjustable Top Mounts: Pillowball front top mounts allow for precise camber adjustment and direct steering feedback. Reduced Damper Fade: Inverted layout keeps oil temperature more stable by increasing distance from hot brake components. Bearing-Mounted Spring Platforms: Minimizes friction between the spring and the perch to eliminate "spring binding" and popping. Patented Concave Locking Ring: Unique design ensures that once height is set, the lower mounts remain locked securely against vibration. Serviceable Design: Fully rebuildable with all replacement parts available directly from BC Racing. Specifications: Vehicle Fitment: 2012–2019 BMW 3-Series (F31) Touring / Wagon (3-Bolt Front Top Mounts). Spring Rates (Default): Front: 6 kg/mm | Rear: 10 kg/mm. Optional Rates: Custom springs (BC or Swift) available from 4kg to 20kg+ to suit specific builds. Construction: TIG-welded heavy-duty steel and anodized aluminum components. Warranty: 2-Year limited manufacturer's warranty.

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BC Racing RM Series Coilover Suspension Kit - 3-Bolt Top Mount - BMW ...

T#:47439436

Part#: I-49-RM

Back Ordered

$ 1,515.00 USD

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Qty

$ 1,515.00 USD

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The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The BC Racing RM Series Coilover System uses a much larger inverted piston shaft that can handle higher lateral loads for longer periods of time without fatigue. These higher lateral loads are only prevalent on McPherson style strut suspension, not on Double A-Arm vehicles.

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