BMW E46 M3 S54 (1999-2005)

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HJS Exhaust Pipe Hanger - E36, E39, E46, E90, E92, E93, Z4
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T#:556847
Part#: 18201401797
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$ 35.99 USD
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Rear muffler hanger
BC Racing BR Series Coilover Suspension Kit - BMW E46 M3
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T#:555853
Part#: I-14-BR
In Stock
$ 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:

  • 8k Front & 12k Rear Spring Rate
  • Linear front & S-Barrel rear springs
  • Valved specifically to spring style and rate
  • Camber Plate 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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BC Racing Rear Damping Adjustment Extenders - BR Type
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T#:555864
Part#: DMP-EXT
Ships in 2 Business Days
$ 39.99 USD
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The rear damping adjuster on coilovers is usually hidden under a bunch of hard to reach interior panels requiring you to remove carpet, panels and sometimes even the rear seat back in order to adjust the dampening on your BC rear coilovers. The BC Racing rear extender adjuster allow you to make these adjustments without removing the rear interior. Simple make two small holes in the interior above the adjuster and the extension can be passed through the interior panels. Now the adjustments can be performed from above.
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BC Racing DS Series Coilover Suspension Kit - BMW E46 M3
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T#:598270
Part#: I-14-DS
In Stock
$ 1,395.00 USD
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$ 1,395.00 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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Active Autowerke Rotrex Traction Fluid - One Liter
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T#:397307
Part#: 12-032
Ships in 2 Business Days
$ 240.00 USD
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$ 240.00 USD
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Rotrex superchargers utilize a unique traction drive system that sets it apart from other centrifugal-style superchargers. For best performance, Rotrex recommends replacing this fluid every 50,000 miles. This bottle of traction fluid is plenty enough for one supercharger service (typically 750ml). 
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Rear Subframe Reinforcement Kit
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T#:397247
Part#: 13-005
Ships in 4 Business Days
5% off MSRP $ 149.00

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

$ 142.00 USD
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5% off MSRP
$ 149.00

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

$ 142.00 USD
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One of the most common issues with the E46 is that the subframe likes to tear away from the chassis. Fix this by welding in a Rear Subframe reinforcement kit.

  • Includes all necessary reinfored metal plates
  • Professional installation is required
  • Suspension must be realigned after installation

Fits the following BMWs:
1998 - 2006 E46 320i 323i 325i 325xi 328i 330i 323ci 325ci 330ci M3 

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Active Autowerke Sport Fan Clutch - E36 E46
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T#:397219
Part#: 14-010
Ships in 3 Business Days
5% off MSRP $ 259.00

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

$ 246.99 USD
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5% off MSRP
$ 259.00

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

$ 246.99 USD
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When you push your powerplant, thermodynamics push right back. The toll of high performance is higher heat load – and many stock components begin to complain. But Active Autowerke has you covered - this upgraded fan clutch increases viscous coupling of cooling fan blade speed to water pump speed, yielding increased airflow through the radiator for more efficient cooling. A simple, yet wonderful, thing.

This product fits the following BMWs:
1992-1999 E36 323i 325i 328i 330i M3
1998-2006 E46 323i 325i 328i 330i M3

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Active Autowerke Signature Trunk Emblem
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T#:590914
Part#: AASIGNATUREPLAQU
Ships in 4 Business Days
4% off MSRP $ 45.00

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

$ 43.00 USD
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4% off MSRP
$ 45.00

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

$ 43.00 USD
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Stand out from the crowd, and give them a hint of what you've got going on under the hood, with the official Active Autowerke Signature Emblem! The emblem can be placed anywhere on the exterior, or interior of your BMW. Hefty stainless steel construction and durable double-sided tape will help ensure that it is never lost, even at speeds over 170+ MPH...Don't ask us how we know! Represent your favorite BMW tuner for all to see today!
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Active Autowerke Level 1 Supercharger Kit - E46 M3 (6 Speed Transmiss...
For vehicles with 6 speed transmissions
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For vehicles with 6 speed transmissions
Active Autowerke - Corporate Logo
T#:397296
Part#: 12-023
Ships on Jul 24, 2026
5% off MSRP $ 11,249.00

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

$ 10,686.99 USD
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5% off MSRP
$ 11,249.00

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

$ 10,686.99 USD
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Since getting their start in 1981, Active Autowerke has earned a well-respected reputation in the BMW community for engineering high-quality power solutions for popular BMW models. This supercharger kit will produce 525 horsepower and 335 ft.lbs. of torque on your BMW, while retaining platform integrity and daily driveability. Unique to the design of the Rotrex supercharger is the traction drive system, which eliminates the lag often found in other centrifugal supercharger setups. Power delivery is smooth and dependable, and 100% reversible to stock if you so choose, since each system is designed as a self-contained unit.

Kit features:

  • Rotrex 92 trim supercharger running 7 PSI of boost
  • Supercharger bracket, pulleys, & belt
  • Self-contained oiling system with front-mount oil cooler
  • 6 high-flow fuel injectors
  • Colder heat range spark plugs
  • Active Autowerke  Generation 7 intake manifold with dual bypass valve
  • Front mount air-to-air intercooler
  • Active Autowerke air filter
  • Active Autowerke dyno-tuned software
  • All mounting hardware, plumbing, hoses, & clamps
  • Illustrated instruction manual & installation guide
  • 2 year warranty with free tech support

Performance Specs:

  • Power   :   525 BHP @ 7650 rpm
  • Torque   :   335 ft/lbs @ 5400 rpm
  • Boost Level   :   7-8 psi
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BC Racing BR Series Extreme Low Coilovers - BMW E46 M3
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T#:568104
Part#: I-14E-BR
Ships on Aug 28, 2026
$ 1,345.00 USD
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$ 1,345.00 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, up to 5". 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: 6k Front & 12k Rear Spring Rate V-Barrel front & Linear rear springs Valved specifically to spring style and rate Camber Plate Front Mounts Aluminum and Rubber Front Mounts Black Powder Coated Components All OE style brackets and mounting for perfect fit 30 Levels of Simultaneous Compression and Rebound Dampening Extreme Drop version allows additional 1-1.5" lowering over the standard 2-4" lowering from traditional BR suspension kits Shocks are 1" shorter in length and springs are specifically selected for greater lowering capabilities Great for Track, Street, and any other conditions
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BC Racing RM Series Coilover Suspension Kit - On-Center Front Mounts ...
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T#:4319909
Part#: I-14-RM
Back Ordered
$ 1,495.00 USD
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$ 1,495.00 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 extremely effective, but also don't brake the bank! 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 RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages. The large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistent steering geometry resulting in more predictable and responsive handling. 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 aluminum components (top mounts, locking collars etc.) are anodized 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 Inverted Mono-Tube Damper Linear Piston And Damping Curve Height Adjustment Independent Of Spring Compression 30-Clicks Of Simultaneous Compression/Rebound Adjustment Front Camber Plates Standard On Applicable Kits Rear Camber Plates Available For Applicable Kits Custom Spring Rates And Swift Spring Compatible Custom Valving Or Valving Paired For Custom Spring Rates 1-Year Warranty Against Manufacturers Defect Fully Rebuildable NOTE: LEAD TIMES WILL BE 4-8 WEEKS.
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HJS Exhaust Gasket Ring - E36, E46, Z3, Z4
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T#:388461
Part#: 18111723379
In Stock
$ 10.99 USD
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Seals the mid-pipe to the muffler


Active Autowerke Methanol Injection System - E46
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T#:397237
Part#: 14-003
Ships in 4 Business Days
$ 2,137.00 USD
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$ 2,137.00 USD
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Turbo vehicles often suffer from heat soak - methanol injection systems help cool the intake charge, and increases your engine’s knock limit – giving you a failsafe against high boost detonation. Active Autowerke's methanol-water is precisely delivered and metered by its own electronic module, which measures boost pressure within the engine and controls the delivery flow to match both the engine load and demand as needed.

  • The large 1.8+ gallon reservoir
  • Rigid mount can be easily detached if needed by its spring loaded quick releases.
  • For offroad use only.
  • Does not include any fluid.

This methanol injection system fits the following BMWs:
1998-2006 E46 320i 323i 325i 325xi 330i 330xi 323ci 325ci 330ci M3

 

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Active Autowerke PRIMA Supercharger Upgrade Kit to PRIMA Plus - E46 M...
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T#:397299
Part#: 12-022
Ships on Jul 24, 2026
5% off MSRP $ 2,249.00

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

$ 2,136.99 USD
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5% off MSRP
$ 2,249.00

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

$ 2,136.99 USD
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As the producer of one of the finest working supercharger systems for the BMW E46 M3, Active Autowerke is proud to introduce the PRIMA PLUS supercharger system capable of exceeding 500 WHP running on pump drawn 93 octane. The PRIMA PLUS is an upgrade kit to the existing PRIMA supercharger system designed to create MORE horsepower. In collaboration with Frank Smith of Tuning Tech FS, the Prima PLUS SC kit has evolved as a fantastic performer. With numerous dyno runs under countless hours all monitored through careful Data Logging and Lean/Rich evaluation, this PRIMA PLUS supercharger kit is ready for the BMW enthusiast. The PRIMA PLUS is a centrifugal design supercharger using a conventional fixed drive pulley, but unlike its predecessors, the PRIMA PLUS also has variable boost settings of 9.0 psi and 9.5 psi to help attain the power. A first in the BMW forced induction industry. For easy comparisons, here is where the PRIMA and PRIMA PLUS + stands when measuring rear wheel horsepower. A stock BMW E46 M3 is around 265 WHP. | PRIMA SC makes 425 WHP. | PRIMA PLUS SC makes 500+ WHP.
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Active Autowerke Supercharger Kit - E46 M3
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Active Autowerke - Corporate Logo
T#:340093
Part#: AASC-E46M3
Ships in 10 Business Days
Starting at $ 7,995.00 USD
Starting at $ 7,995.00 USD
Race on Sunday, to sell on Monday. This old saying is indicative of the new Generation 8 supercharger system for the E46 M3. Through countless hours of testing, it has often been quoted that the true test has always been a race environment. What better venue than Brock Yates One Lap of America Race. With a rigorous 7,000 miles to be covered within a week, and to compete against the likes of Porsches, Corvettes, Nissan GTRs, this would be the testing grounds for the new Generation Active Autowerke Supercharger system. The Active Autowerke Generation 8 Supercharger System not only proved its worth by being the highest ranked BMW within the field, but also ranked 1st in its class..

The data and technology that made this winning combination is now being applied in the new Generation 8 of the Active Autowerke supercharged E46 M3 level 1. Reliability and power is needed if you want to be on the podium, and this new Generation 8 will deliver exactly that. Consistent, repeatable runs of over 415 WHP (525 engine horsepower) were also recorded on the Active Autowerke chassis dyno in hot 94 + degree Fahrenheit conditions with humidity in the 60% + range. These run conditions might be considered a deterrent and not really suited, but it is better knowing the horsepower numbers are under such conditions, since higher horsepower numbers will only increase as the temperature falls and the air becomes more dense.

Stage 1 Performance Specs:
Power : 525 BHP @ 7650 rpm
Torque : 335 ft/lbs @ 5400 rpm
Boost Level : 7-8 psi

Key Features:
  • Rotrex 92 Trim Supercharger
  • Active Autowerke Gen 7 Intake Manifold w/ Dual By Pass Valve
  • Front Mount Air to Air Intercooler
  • Turbo like speed with linear power delivery
  • Large Fuel Injectors
  • Supercharger Oil Cooler
  • Colder Heat Range Spark Plugs
  • High Performance AA Spec Green Filter
  • Active Autowerke High Performance Software
  • All Mounting Hardware, plumbing, hoses and clamps
  • Proven Horsepower gains even under extreme conditions
  • Installation Instructions included
  • 2 Year Limited Warranty
    Want even more power? Upgrade to the Stage 2 kit with Larger Intercooler & Fuel System.
    The stage 2 System boosts the S54's power output to over 600BHP and includes an upgraded fuel system (includes two fuel pumps, fuel filter, all new -6 lines, fuel pressure regulator, dead end fuel rail, upgraded injectors and all required fittings). This ugpraded fuel system is a must once reaching these increased boost levels due to the fact that the factory fuel system is simply inadequate at this level. The stage 2 system also use a larger front mount air to air intercooler and the Active Autowerke custom methanol injection system. NOTE: Level 2 supercharger system is designed and engineered to operate in conjunction with the Active Autowerke Water/Methanol system as an integral part of the kit. Reasons to incapacitate, isolate, turn off, or not installing this system can and will void all warranty and related claims associated to the proper function of the specified Active Autowerke supercharger system.

    Stage 2 Performance Specs:
    Power � : � 605 BHP @ 7000 rpm
    Torque � : � 395 ft/lbs @ 5400 rpm
    Boost Level � : � 11-12 psi

    Custom built to order. Please allow 2-3 weeks for delivery.

    This item fits the following BMWs:
    2001-2006 E46 BMW M3, M3 Convertible
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    BMW S54 S65 Gasket Ring - Priced Each
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    HJS - Corporate Logo
    T#:594771
    Part#: 11627830668
    Ships in 4 Business Days
    $ 9.99 USD
    Free Shipping on orders $49 and up

    Active Autowerke PRIMA Supercharger Kit - E46 M3 (6 Speed Transmissio...
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    Active Autowerke - Corporate Logo
    T#:397295
    Part#: 12-021
    Ships on Jul 24, 2026
    5% off MSRP $ 9,375.00

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

    $ 8,906.99 USD
    Free Shipping
    5% off MSRP
    $ 9,375.00

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

    $ 8,906.99 USD
    Free Shipping

    Since getting their start in 1981, Active Autowerke has earned a well-respected reputation in the BMW community for engineering high-quality power solutions for popular BMW models. This supercharger kit will produce 425 horsepower and 295 ft.lbs. of torque on your BMW, while retaining platform integrity and daily driveability. Unique to the design of the Rotrex supercharger is the traction drive system, which eliminates the lag often found in other centrifugal supercharger setups. Power delivery is smooth and dependable, and 100% reversible to stock if you so choose, since each system is designed as a self-contained unit. best of all, when you crave more power, this kit is fully upgradeable to Level 1 and Level 2 specs.

    Kit features:

    • Rotrex C38-92 trim supercharger running 5.8 PSI of boost
    • Active Autowerke GEN 7 intake manifold
    • Active Autowere dual blow-off valve setup
    • Active Autowerke Air Filter
    • Alpha N software tune w/ SIMON2 interface
    • 6 high-flow fuel injectors
    • Dedicated oil cooling system
    • All mounting hardware, plumbing, hoses, & clamps
    • Illustrated instruction manual & installation guide
    • 2 year warranty with free tech support

    Base Prima supercharger Dynojet results:
    Boost: 5.8 psi
    Stock Horsepower:  285.4 WHP @ 7500 RPM
    Stock Torque: 232.36 LB-FT @ 5250 RPM
    Supercharged Horsepower: 426.69 WHP @ 8150 RPM
    Supercharged Torque: 297.99 LB-FT @ 7200 RPM

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    PRIMA Supercharger Kit (Non-Intercooled) - E46 M3
    For SMG Transmissions Only ~ Call in to provide vin before purchase
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    For SMG Transmissions Only ~ Call in to provide vin before purchase
    Active Autowerke - Corporate Logo
    T#:50899202
    Part#: 12-021S
    Ships on Jul 24, 2026
    New Item
    $ 8,906.00 USD
    Free Shipping
    $ 8,906.00 USD
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    Co-developed with Frank Smith of TuningTechFS, the Active Autowerke PRIMA Supercharger Kit delivers a proven entry point into forced induction for the E46 M3. The system is engineered around efficiency, repeatability, and upgrade potential, with a baseline configuration that can grow beyond 500 WHP through available Level 1 and Level 2 packages. PRIMA focuses on clean, practical design. This is a fully bolt-on, non intercooled setup that installs without custom fabrication and can be reverted to stock if required. The modular architecture also allows straightforward progression to higher output configurations. As expected from Active Autowerke, the kit enhances overall performance while preserving the sharp throttle response and balanced character of the S54-powered M3. PRIMA Supercharger Kit Key Features Rotrex C38-92 supercharger assembly Active Autowerke GEN 9 intake manifold plenum Active Autowerke dual blow off valve configuration Active Autowerke green performance filter with cover Alpha N calibration with SIMON 4 interface included High capacity fuel injectors Colder heat range spark plugs Dedicated self contained oil cooling circuit Pre assembled hoses, clamps, and installation hardware Compatible with Level 1 and Level 2 upgrade paths Baseline Dynojet Results Boost: 5.8 PSI Stock Power: 285.4 WHP @ 7500 RPM Stock Torque: 232.36 lb ft @ 5250 RPM Supercharged Power: 426.69 WHP @ 8150 RPM Supercharged Torque: 297.99 lb ft @ 7200 RPM
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    Active Autowerke E46 M3 Prima Plus + Supercharger With 600HP Upgrade ...
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    Active Autowerke - Corporate Logo
    T#:401508
    Part#: 12-035
    Ships on Jul 24, 2026
    $ 8,359.99 USD
    Free Shipping
    $ 8,359.99 USD
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    As producer of one of the finest working supercharger systems for the BMW E46 M3, Active Autowerke is proud to introduce the PRIMA PLUS supercharger system capable of exceeding 500 WHP running on pump drawn 93 octane. The PRIMA PLUS is an upgrade kit to the existing PRIMA supercharger system designed to create MORE horsepower.
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    BC Racing DS Series Coilover Suspension Kit - Off Center Top Plates -...
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    BC Racing - Corporate Logo
    T#:49892348
    Part#: I-14-DS-OFFC
    Ships on Aug 28, 2026
    New Item
    $ 1,565.00 USD
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    $ 1,565.00 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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    E46 M3 Prima Plus + Supercharger With 600HP Upgrade Kit
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    For SMG Transmissions Only ~ Call in to provide vin before purchase
    Active Autowerke - Corporate Logo
    T#:50934251
    Part#: V12-035S
    Ships on Jul 24, 2026
    New Item
    $ 10,449.00 USD
    Free Shipping
    $ 10,449.00 USD
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    As producer of one of the finest working supercharger systems for the BMW E46 M3, Active Autowerke is proud to introduce the PRIMA PLUS supercharger system capable of exceeding 500 WHP running on pump drawn 93 octane. The PRIMA PLUS is an upgrade kit to the existing PRIMA supercharger system designed to create MORE horsepower.
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    BC Racing BR Series Coilover Suspension Kit - W/ Swift Springs - E46 ...
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    BC Racing - Corporate Logo
    T#:53361585
    Part#: I-121-BR-SW
    Ships on Aug 28, 2026
    New Item
    $ 1,765.00 USD
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    $ 1,765.00 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 - E46 M3 Convertible ...
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    BC Racing - Corporate Logo
    T#:36777918
    Part#: I-121-BR
    Ships in 6 Business Days
    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
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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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    Center Exhaust Hanger - E39, E46, E52, E60, E63, E64, E90, E92, E93,...
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    HJS - Corporate Logo
    T#:385215
    Part#: 18207832991
    In Stock
    $ 16.99 USD
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    Located over the center exhaust support


    BC Racing RM Series Coilover Suspension Kit - Off-Center Front Mounts...
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    BC Racing - Corporate Logo
    T#:4333503
    Part#: I-14-RM-O
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    $ 1,495.00 USD
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    $ 1,495.00 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 extremely effective, but also don't brake the bank! 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 RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages. The large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistent steering geometry resulting in more predictable and responsive handling. 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 aluminum components (top mounts, locking collars etc.) are anodized 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 Inverted Mono-Tube Damper Linear Piston And Damping Curve Height Adjustment Independent Of Spring Compression 30-Clicks Of Simultaneous Compression/Rebound Adjustment Front Camber Plates Standard On Applicable Kits Rear Camber Plates Available For Applicable Kits Custom Spring Rates And Swift Spring Compatible Custom Valving Or Valving Paired For Custom Spring Rates 1-Year Warranty Against Manufacturers Defect Fully Rebuildable NOTE: LEAD TIMES WILL BE 4-8 WEEKS.
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    BC Racing ZR Series Coilover Suspension Kit - On-Center Front Mounts ...
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    BC Racing - Corporate Logo
    T#:4333519
    Part#: I-14-ZR-C
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    $ 2,835.00 USD
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    $ 2,835.00 USD
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    BC Racing's new ZR Series Coilovers bring a 3-way adjustable track ready coilover system to racers from novice to pro for a price not seen before in the performance suspension market. Each ZR Series Coilover system offers independent low speed and high speed compression adjustment and separate rebound adjustment. They also offer full height adjustability independent of piston travel and spring preload. On cars with McPherson struts the ZR Series comes standard with an inverted monotube damper with the steel braided Teflon coated line exiting the top of the damper to the external reservoirs that can be remotely mounted in the engine bay or boot. The ZR Series kits offer 30 clicks of rebound adjustment, 15 clicks of low speed compression adjustment, and 12 clicks of high speed compression. 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 aluminum components (top mounts, locking collars etc.) are anodized 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: * 3-way adjustable damping controls * External reservoir * Engineered for 100% track use * Inverted damper design. (depending on models) * Dual Piston design. (1 in res., 1 in shock) * Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars * Custom spring rates available * Completely rebuildable * Monotube damper design * Patented concave lower locking collar * 1 year manufacturer warranty
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    BC Racing ER Series Coilover Suspension Kit - On-Center Front Mounts ...
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    BC Racing - Corporate Logo
    T#:4333550
    Part#: I-14-ER-C
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    $ 1,935.00 USD
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    $ 1,935.00 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 ZR Series Coilover Suspension Kit - Off-Center Front Mounts...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    BC Racing - Corporate Logo
    T#:4333520
    Part#: I-14-ZR-O
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    $ 2,835.00 USD
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    $ 2,835.00 USD
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    BC Racing's new ZR Series Coilovers bring a 3-way adjustable track ready coilover system to racers from novice to pro for a price not seen before in the performance suspension market. Each ZR Series Coilover system offers independent low speed and high speed compression adjustment and separate rebound adjustment. They also offer full height adjustability independent of piston travel and spring preload. On cars with McPherson struts the ZR Series comes standard with an inverted monotube damper with the steel braided Teflon coated line exiting the top of the damper to the external reservoirs that can be remotely mounted in the engine bay or boot. The ZR Series kits offer 30 clicks of rebound adjustment, 15 clicks of low speed compression adjustment, and 12 clicks of high speed compression. 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 aluminum components (top mounts, locking collars etc.) are anodized 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: * 3-way adjustable damping controls * External reservoir * Engineered for 100% track use * Inverted damper design. (depending on models) * Dual Piston design. (1 in res., 1 in shock) * Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars * Custom spring rates available * Completely rebuildable * Monotube damper design * Patented concave lower locking collar * 1 year manufacturer warranty
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    BC Racing ER Series Coilover Suspension Kit - Off-Center Front Mounts...
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    BC Racing - Corporate Logo
    T#:4333551
    Part#: I-14-ER-O
    Back Ordered
    $ 1,935.00 USD
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    $ 1,935.00 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 DS Series Coilover Suspension Kit - E46 M3 Convertible ...
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    BC Racing - Corporate Logo
    T#:51355987
    Part#: I-121-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 M3 Convertible is built using motorsport-grade materials designed to withstand the rigors of spirited driving and technical road courses. Because the E46 M3 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 hand-assembled and fully rebuildable, 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 M3 chassis to its limits. Key Features: Front Camber Plates: Precision-engineered aluminum alloy plates for surgical alignment and increased turn-in bite. 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. Fully Rebuildable: Every component, from the seals to the valving, is individual and replaceable for long-term serviceability. Customization Ready: Fully compatible with custom spring rates and Swift Spring upgrades for tailored track setups. Specifications: Vehicle Fitment: 2000–2006 BMW M3 Convertible (E46 Chassis). Spring Rates (Default): Front: 7 kg/mm | Rear: 12 kg/mm. Spring Type: High-strength SAE9254 cold-wound steel. Adjustability: Independent ride height, independent spring preload, and 30-way damping. Warranty: 2-Year limited manufacturer's warranty.
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    BC Racing HM Series Coilover Suspension Kit - E46 M3 Convertible ...
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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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    BC Racing ER Series Coilover Suspension Kit - E46 M3 Convertible ...
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    BC Racing - Corporate Logo
    T#:51355992
    Part#: I-121-ER
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    $ 1,955.00 USD
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    $ 1,955.00 USD
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    For the E46 M3 enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ER Series offers a "motorsport-first" engineering approach. By moving the secondary damping piston to the external canister, the system maintains its integrity under high-stress conditions. This is especially beneficial for the M3 Convertible, where the high 12kg rear spring rate helps counteract the platform's inherent weight and chassis flex, providing a flat and predictable cornering attitude. The system includes front pillowball camber plates as standard, eliminating the compliant factory rubber bushings to provide direct, unmediated steering feedback and allowing for aggressive track-ready alignment settings. Key Features: Reduced Damping Fade: External canisters keep fluid cooler by increasing the distance from hot brake components. 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 extreme vibration. Linear Piston Architecture: Provides a predictable and consistent damping feel for better driver confidence at the limit. Serviceable Construction: All components are individual and fully replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2000–2006 BMW M3 (E46) Convertible / Coupe. Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm. Spring Type: High-strength SAE9254 cold-wound steel. Construction: Black chrome-plated steel bodies for maximum corrosion resistance and anodized 6061-T6 aluminum. Warranty: 1-Year limited manufacturer's warranty.
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    BC Racing ZR Series Coilover Suspension Kit - E46 M3 Convertible ...
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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 ZX Series Coilover Suspension Kit - E46 M3 Convertible ...
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    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 RM Series Coilover Suspension Kit - E46 M3 Convertible ...
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    BC Racing - Corporate Logo
    T#:51355989
    Part#: I-121-RM
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    $ 1,515.00 USD
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    $ 1,515.00 USD
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    For the E46 M3 Convertible owner who demands uncompromised feedback during spirited driving or track sessions, the BC Racing RM Series offers a professional-grade motorsport approach. By moving the fluid reservoir away from the wheel hub and brake components, the RM Series manages heat more effectively, preventing damper fade during prolonged high-speed sessions. The inclusion of front pillowball camber plates replaces compliant factory rubber bushings, providing direct and unmediated steering feel. Because convertibles often require higher roll stiffness to compensate for chassis flex, the RM Series' default 12kg rear spring rate provides the stability needed to keep the E46 M3 planted and responsive through tight technical sections. Key Features: Reduced Damper Fade: Inverted layout keeps oil temperature more stable by increasing distance from hot brake components. 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 against vibration. Linear Piston Architecture: Provides a predictable and consistent damping feel for better driver confidence at the limit. Fully Rebuildable: Every component is individual and replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2000–2006 BMW M3 (E46) Convertible / Coupe. Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm. Optional Upgrades: Compatible with custom spring rates and Swift Springs (+2kg/-2kg range on standard valving). Finish: Black chrome-plated steel bodies for maximum corrosion resistance. Warranty: 2-Year limited warranty against manufacturer's defects.
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