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BMW Coilovers

Coilovers provide more adjustability than a strut and spring setup and can serve a variety of different needs - it's important to be sure of what your suspension goals are. We have broken down our coilover catalog into street and track categories, this is not to say you can't use one of our aEURoestreetaEUR coilovers on the track, or vice versa, but it is to give you a starting point. Are you someone who is interested in getting your BMW lower than factory height for the aesthetic value and handling benefits in a daily driver? Check out our street category. The majority of these are priced to avoid breaking the bank, but providing a good value in terms of features and benefits. On the other hand, if you are putting together your vehicle with the track as its main purpose, take a look at our track coilovers category. We have hand selected these coilover brands as being more expensive coilovers built to hold up to abuse.

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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
BC Racing - Corporate Logo
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 - Corporate Logo
T#:51355985
Part#: I-131-DS
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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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BC Racing - Corporate Logo
T#:47439436
Part#: I-49-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 - Corporate Logo
T#:46753512
Part#: I-153-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 - Corporate Logo
T#:47439365
Part#: I-62-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 - Corporate Logo
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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BC Racing - Corporate Logo
T#:51320838
Part#: I-114-ER
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$ 1,955.00 USD
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For the F31 Touring owner looking to dominate the track while maintaining a refined street presence, the BC Racing ER Series offers a "motorsport-first" engineering approach. The inverted-style front struts (on applicable MacPherson designs) and external canisters move the weight of the fluid away from the hubs, reducing unsprung weight and improving the suspension's ability to react to high-speed road imperfections. The system includes bearing-mounted upper spring platforms to eliminate spring "binding" or popping during tight maneuvers. With its massive range of adjustability and robust build quality, the ER Series transforms the F31 wagon into a highly capable, predictable, and remarkably fast track machine. Key Features: Reduced Unsprung Weight: Strategic component placement allows the wheels to track road surfaces more effectively for increased grip. Advanced Damping Control: 30 clicks of compression (on the reservoir) and 30 clicks of rebound (on the shock top) for 900 possible damping combinations. Pillowball Top Mounts: Eliminates the "mushy" feel of factory rubber bushings, providing direct and unmediated feedback to the driver. Concave Lower Locking Ring: BC Racing's patented design prevents the lower mounts from vibrating loose even under extreme track vibration. Serviceable Design: All components are individual and fully replaceable, making the system a long-term investment for the life of the vehicle. Specifications: Vehicle Fitment: 2012–2019 BMW 3-Series (F31) Touring / Wagon (Models with 3-Bolt Top Mounts). Spring Rates (Default): Front: 6 kg/mm | Rear: 10 kg/mm. Spring Type: High-strength SAE9254 cold-wound steel springs. Adjustability: Independent ride height, independent spring preload, and independent 2-way damping. Warranty: 2-Year limited manufacturer's warranty against defects.
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EVO SE B16 Coilover Kit
10X Entries Into Our F80 M3 Sweepstakes
Bilstein - Corporate Logo
T#:56978004
Part#: 49-321067
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$ 2,586.00 USD
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$ 2,586.00 USD
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Unleash true track-inspired handling and precision chassis control with the Bilstein B16 performance coilover system.

BC Racing - Corporate Logo
T#:47576367
Part#: I-97-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 - Corporate Logo
T#:46753518
Part#: I-155-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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H&R - Corporate Logo
T#:374091
Part#: 36925-2
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$ 1,690.00 USD
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$ 1,690.00 USD
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H&R Street Performance SS Coil Overs are now available with polished stainless steel shock tubes. These new Coil Overs are shock damping adjustable—allowing personalized tuning of the shock setting to suit driving needs for high performance or comfort. Height adjustability is made possible by fully threaded shock bodies and easy to adjust spring seats / locking rings. H&R ride development engineers have precisely plotted the perfect shock damping curves of each application for optimized handling and superb ride comfort. To ensure the best quality available H&R has partnered with world-renowned shock absorber specialist KONI to manufacture the shocks.
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BC Racing - Corporate Logo
T#:47576368
Part#: I-97-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 - Corporate Logo
T#:47439428
Part#: I-85-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 - Corporate Logo
T#:46409676
Part#: I-155-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 - Corporate Logo
T#:25009233
Part#: I-43-DS
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$ 1,395.00 USD
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$ 1,395.00 USD
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The DS Series Coilovers use a proprietary digressive piston design that offers the driver increased damping force at low-speed 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. You will notice a much more planted and confident chassis feel, with increased feedback through the steering wheel. To evoke the passion for driving that all automotive enthusiasts have embedded in their DNA, BC Racing took the best features from Their BR Series Coilover, engineered components to improve driver experience, conducted in-house testing, approved the product, determined a reasonable, affordable price, and proudly present the BC Racing DS Series Coilover for 350+ vehicles, from the Toyota Camry to the Nissan GT-R and beyond, BC Racing has a DS Series Coilover system for you. The DS Series is available for a vast number of vehicles and with that, an equal number of customization options as well. The BC Racing DS Series Coilover can be customized for every type of racing imaginable, from the weekend track warrior to the full-time race car.
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BC Racing - Corporate Logo
T#:51320850
Part#: I-90-RM
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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 - Corporate Logo
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 - Corporate Logo
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 - Corporate Logo
T#:47439433
Part#: I-104-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 - Corporate Logo
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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BC Racing - Corporate Logo
T#:47576369
Part#: I-97-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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B4 OE Replacement Shock Absorber - Rear
10X Entries Into Our F80 M3 Sweepstakes
Bilstein - Corporate Logo
T#:56977991
Part#: 19-317410
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$ 98.00 USD
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$ 98.00 USD
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Regain sharp suspension feedback and precise chassis control with the Bilstein B4 OE replacement shock absorber.
EVO S Suspension Kit - Front & Rear
10X Entries Into Our F80 M3 Sweepstakes
Bilstein - Corporate Logo
T#:56977990
Part#: 47-322547
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$ 2,136.00 USD
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$ 2,136.00 USD
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Unleash true chassis performance and track-bred responsiveness with the Bilstein B14 Coilover Kit.
BC Racing - Corporate Logo
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 - Corporate Logo
T#:46409680
Part#: I-153-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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KW Suspension - Corporate Logo
T#:339944
Part#: 1022000ABX
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Starting at $ 2,384.00 USD
Starting at $ 2,384.00 USD
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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    BC Racing - Corporate Logo
    T#:51320856
    Part#: I-90-HM
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    $ 2,565.00 USD
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    $ 2,565.00 USD
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    For the E46 Convertible owner looking to overcome the platform's inherent chassis flex and maximize track performance, the BC Racing HM Series offers a motorsport-first engineering approach. By utilizing an inverted strut layout and a high 12kg rear spring rate, the HM Series provides uncompromised geometry control under heavy cornering loads. The 2-way independent adjustment allows the driver to fine-tune high-speed stability and low-speed turn-in separately, which is critical for balancing a convertible's unique weight distribution. Every HM Series kit is hand-assembled with TIG-welded 304 stainless steel and 6061-T6 aluminum components, ensuring a system that is as durable as it is fast. Key Features: Enhanced Thermal Stability: External canisters move the fluid away from brake heat to maintain valving accuracy. Linear Twin-Piston Design: Provides a large surface area for precise and predictable damping response. Camber Adjustable Top Mounts: Precision-engineered aluminum plates eliminate factory rubber compliance for direct steering feedback. Independent Ride Height: Threaded shock bodies allow for height adjustment without sacrificing damper stroke or spring travel. Fully Rebuildable: All components are 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. Piston Design: Linear Twin-Piston. Construction: 304 Stainless Steel and Anodized 6061-T6 Aluminum. Warranty: 2-Year limited manufacturer's warranty.
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    BC Racing - Corporate Logo
    T#:50066866
    Part#: I-155-ZX
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    $ 2,595.00 USD
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    $ 2,595.00 USD
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    Enhance your suspension setup with BC Racing coilovers, configured with 5kg/mm front and 6kg/mm rear spring rates to deliver a composed balance between ride quality and performance-focused handling. Utilizing BC Racing’s monotube damper design, this coilover system improves damping response, minimizes body roll, and provides consistent feedback compared to factory suspension components. The spring rate combination favors a compliant front with a slightly softer rear, resulting in predictable chassis behavior and stable, confidence-inspiring handling for street-oriented performance driving. Ride height adjustment is independent of shock travel, allowing precise stance tuning without compromising suspension geometry or ride comfort. Springs and dampers are properly matched to maintain control and stability whether commuting daily or driving aggressively on back roads. Key Features: Monotube dampers for consistent damping performance 5kg/mm front and 6kg/mm rear spring rates optimized for street handling Independent ride height adjustment Tuned for daily driving with spirited performance capability Durable construction for long-term reliability
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    BC Racing - Corporate Logo
    T#:47576358
    Part#: I-153-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 - Corporate Logo
    T#:46753507
    Part#: I-151-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 - Corporate Logo
    T#:47576364
    Part#: I-155-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 - Corporate Logo
    T#:50066868
    Part#: I-153-ZX
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    $ 2,595.00 USD
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    $ 2,595.00 USD
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    Take command of your chassis with BC Racing coilovers, featuring 6kg/mm front and 10kg/mm rear spring rates for a perfect balance of ride comfort and performance-oriented handling. Built around BC Racing’s monotube damper design, this coilover system provides sharper damping response, reduced body roll, and consistent feedback compared to factory suspension. The spring combination offers a compliant front end with a slightly firmer rear, promoting predictable handling and stable, confidence-inspiring performance for street and spirited driving. Independent ride height adjustment lets you dial in stance without compromising shock travel or ride quality. Matched springs and dampers work together to keep the car composed whether you’re commuting, carving back roads, or pushing hard on spirited drives. Why it stands out: Monotube dampers for consistent, reliable performance 6kg/mm front, 10kg/mm rear spring rates for balanced handling Fully independent ride height adjustment for precise setup Tuned for everyday driving with spirited performance capability Durable construction built for long-term use
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    BC Racing - Corporate Logo
    T#:50731694
    Part#: I-122-BR
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    $ 1,215.00 USD
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    $ 1,215.00 USD
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    If you’re stepping into coilovers for the first time and refuse to trade comfort for capability, the BC Racing BR Series is one of the most well-rounded systems you can bolt on. Extensive chassis-specific R&D and real-world validation mean the setup arrives ready to perform — comfortable enough for daily duty, composed when the pace increases. BC selects spring rates to maintain ride quality while still delivering the body control enthusiasts expect. Combine that with matched damper valving and a wide adjustment range, and you get a package that adapts easily to street driving, back road runs, or time spent at the circuit. A mono-tube damper layout helps maintain consistency as temperatures rise, and the linear piston profile keeps feedback predictable near the limit. Because ride height is adjusted separately from preload, you can fine-tune stance without reducing usable suspension travel. Thirty clicks of combined compression and rebound adjustment give you meaningful flexibility — compliant for commuting, disciplined for competition. Highlights Highly configurable system 10KG front / 5KG rear spring rates Mono-tube shock construction Linear piston and damping behavior Independent ride height adjustment 30-step compression/rebound tuning Front camber plates included where applicable Rear camber options available for select vehicles Alternate spring rates and Swift upgrades available Optional custom valving Fully rebuildable design Covered by a 2-year manufacturer warranty
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    BC Racing - Corporate Logo
    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 - Corporate Logo
    T#:47439435
    Part#: I-130-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 - Corporate Logo
    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 - Corporate Logo
    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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    B4 Suspension Strut Assembly
    10X Entries Into Our F80 M3 Sweepstakes
    Bilstein - Corporate Logo
    T#:56977996
    Part#: 22-317407
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    $ 133.00 USD
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    $ 133.00 USD
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    Eliminate sluggish suspension response and sharpen front-end control with Bilstein suspension engineering.
    BC Racing - Corporate Logo
    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 - Corporate Logo
    T#:46719197
    Part#: I-141-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 - Corporate Logo
    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 - Corporate Logo
    T#:51356016
    Part#: I-121-ZX
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    New Item
    $ 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 - Corporate Logo
    T#:47439429
    Part#: I-85-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 - Corporate Logo
    T#:46753521
    Part#: I-159-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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    B4 Front Strut Assembly
    10X Entries Into Our F80 M3 Sweepstakes
    Bilstein - Corporate Logo
    T#:56977995
    Part#: 22-317391
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    New Item
    $ 133.00 USD
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    $ 133.00 USD
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    Maintain original chassis balance and sharp driving dynamics with Bilstein's OEM suspension restoration solutions.

    BC Racing - Corporate Logo
    T#:47473681
    Part#: I-151-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 - Corporate Logo
    T#:51320846
    Part#: I-90-DS
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    $ 1,415.00 USD
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    $ 1,415.00 USD
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    The BC Racing DS Series for the E46 Convertible is built using motorsport-grade materials designed to withstand the rigors of spirited driving and technical road courses. Because the E46 platform benefits greatly from increased front camber, this kit comes standard with front pillowball camber plates. These plates replace the compliant factory rubber mounts, providing unmediated feedback to the driver and allowing for aggressive alignment settings to maximize tire contact patches. Every DS Series kit is fully rebuildable and customizable, with the option to upgrade to Swift Springs for even more consistent spring rates and reduced weight. Whether you're carving canyons or attending a weekend track day, the DS Series provides the stability and feedback needed to push the E46 chassis to its limits. Key Features: Front Camber Plates: Precision-engineered aluminum plates for surgical alignment and increased turn-in bite. Satin Chrome Finished Shock Body: A highly durable coating that resists the elements while providing a high-end look. Linear Spring Piston: While the valving is digressive, the springs remain linear to provide a predictable and consistent feel. Fully Rebuildable: Every part, from the seals to the valving, is serviceable and replaceable. Custom Spring Rate Compatibility: Can be ordered with custom valving paired specifically to your requested spring rates. Specifications: Vehicle Fitment: 2000–2006 BMW 3-Series (E46) Convertible (All models except M3). Spring Rates (Default): Front: 6 kg/mm | Rear: 8 kg/mm. Optional Rates: Custom rates available (e.g., 8kg/10kg) for more track-oriented setups. Piston Diameter: 46mm. Adjustability: Ride height, spring preload, and 30-way damping.
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    BC Racing - Corporate Logo
    T#:47439434
    Part#: I-130-BR
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    $ 1,215.00 USD
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    $ 1,215.00 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 - Corporate Logo
    T#:51356002
    Part#: I-121-ZR
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    $ 2,865.00 USD
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    $ 2,865.00 USD
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    For the professional-level racer or the extreme enthusiast, the BC Racing ZR Series addresses the unique geometric and thermal requirements of the E46 M3 platform. By utilizing inverted front struts with a massive 42mm piston shaft, the ZR Series provides extreme structural rigidity, preventing geometry deflection under heavy braking and cornering loads. The 3-way adjustment allows the driver to "dial in" the car for specific obstacles; for instance, softening high-speed compression to soak up aggressive curbing while keeping low-speed compression firm for immediate turn-in response. Combined with standard pillowball top mounts, this system eliminates the "mushy" feel of factory rubber, providing direct, unmediated feedback to the driver. Key Features: Reduced Damper Fade: Remote external canisters move fluid away from hot brake components to ensure consistent lap times. Camber Adjustable Top Mounts: High-quality aluminum plates allow for aggressive track alignments to maximize the tire contact patch. Pillowball Rear Mounts: Replaces rubber bushings with solid spherical bearings 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 (E46) Convertible / Coupe. Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm. Construction: TIG-welded steel and CNC-machined aluminum. Adjustment Range: 3-Way Independent (Rebound / Low-Speed Compression / High-Speed Compression). Warranty: 1-Year manufacturer’s warranty against defects.
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    BC Racing - Corporate Logo
    T#:555842
    Part#: I-27-BR
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    4% off MSRP $ 1,245.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 1,195.00 USD
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    4% off MSRP
    $ 1,245.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 1,195.00 USD
    Free Shipping

    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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