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Advanced Clutch Technology (ACT) designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation, and CAM tools help ensure highly optimized performance, reliability, and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.
ACT clutch kits stand unequaled in terms of consistent pedal feel, high torque capacity, long wear life and durability. In-house manufacturing is critical in tuning components specifically to each individual application while maintaining the predictable ACT pedal feel across the entire catalog.
This clutch kit features a Heavy Duty pressure plate and a Performance Street Rigid clutch disc.
The heavy duty pressure plate included offers a 20-50% clamp load increase, stock-moderate pedal feel, and heat treated diaphragms for increased strength and performance.
Next in this kit is the Performance Street Rigid clutch disc. This disc is an unsprung, rigid disk that is suited for aggressive street and moderate racing applications. The disc pad features high quality organic friction material with a high copper content for improved heat transfer and a steel backed lining for increased strength in burst load circumstances. This organic clutch disc has a significantly higher torque capacity than a stock disc but due to its rigid nature, may suffer from slightly increased spline wear over time.
Clutch Kit Specs:
Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.
FX250 (Stage II)
All Clutch Masters clutch kits come complete with:
This clutch kit does not include a flywheel. Requires use of single mass flywheel
SPEC's Stage 2 clutch features a full faced pure Kevlar disc complete with steel backing. This lining offers outstanding driveability like the Stage 1 kit, with an increased torque capacity and a longer life. The hub is double sprung with built-in spring reliefs for flexibility, along with a heat treatment for added strength and durability. This clutch is best served in any situation from daily driven on the street, to drag or autocross racing events.
Kit includes:
Pressure plate
Clutch disc
Pilot bearing
Clutch Release bearing
Clutch Alignment tool
Clutch fork
Designed to be used with a stock dual mass flywheel or any billet single mass designed for a factory style clutch.
Upgrade the clutch performance of your BMW E9X M3 equipped with the S65 4.0L engine using the SPEC Carbon Graphite Clutch. Engineered specifically for this setup, this high-performance clutch delivers outstanding durability and exceptional power handling capabilities, catering to enthusiasts seeking superior clutch performance.
Crafted from premium materials, the SPEC Carbon Graphite Clutch guarantees reliable power transfer, improved grip, and reduced wear. Elevate your driving experience with this precision-engineered clutch upgrade.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
Upgrade your BMW 135i / 335i with the Spec Twin Disc PT-Trim Semi-Metallic Puck Clutch Kit SB53PT-3, ideal for models from February 2009 to 2012. This Super Twin Disc Clutch Kit (SB53PT-3) by SPEC® boasts a PT-Trim design and includes a flywheel. Engineered for street and track use, it's suitable for high-horsepower and high-torque vehicles, offering near-stock drivability and long life expectancy. The bolt-in installation requires no shimming/setup and ensures maintenance-free operation. Constructed with aircraft-grade aluminum and high-carbon billet steel, this clutch kit guarantees perfect balance and actuation. Friction is provided by dampened, full-faced carbon graphite discs. Featuring organic, fiber, and full metallic options, it caters to various driving needs. Each kit includes a flywheel and track-spec hardware. SPEC® products are renowned for their quality and durability, providing years of trouble-free service. This clutch kit is designed to enhance your vehicle's performance and reliability.
Advanced Clutch Technology (ACT) designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation, and CAM tools help ensure highly optimized performance, reliability, and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.
ACT clutch kits stand unequaled in terms of consistent pedal feel, high torque capacity, long wear life and durability. In-house manufacturing is critical in tuning components specifically to each individual application while maintaining the predictable ACT pedal feel across the entire catalog.
This clutch kit features a Heavy Duty pressure plate, an G6 racing clutch disc, and an XACT Streetlite Flywheel.
The heavy duty pressure plate included offers a 20-50% clamp load increase, stock-moderate pedal feel, and heat treated diaphragms for increased strength and performance.
Next in this kit is the G6 racing clutch disc. This disc is a sprung, 6-pad disc that is suited for high horsepower road and track style racing and is also better at handling higher heat versus the 4-pad version of this disc, the G4. The G6 pads are composed of ceramic friction materials and the disc has a chome-moly hub that is heat treated for additional strength under high load engagements. Also featured are heavy duty torsional springs that are rated for the clutch kit's expected uses. Over stock, this clutch kit has a much higher torque capacity and is better for quick shifting thanks to lower weight and inertia. Despite its ceramic racing style pads, this disc has great durability. In turn, these pads provide higher heat tolerances and faster, more aggressive clutch engagements.
The final main component is the XACT Streetlite Flywheel. This option is the most popular thanks to it versatility for street driving and drag/track style racing, its lighter weight for increased throttle response, and its single mass design.
Clutch Kit Specs:
Advanced Clutch Technology (ACT) designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation, and CAM tools help ensure highly optimized performance, reliability, and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.
ACT clutch kits stand unequaled in terms of consistent pedal feel, high torque capacity, long wear life and durability. In-house manufacturing is critical in tuning components specifically to each individual application while maintaining the predictable ACT pedal feel across the entire catalog.
This clutch kit features an Xtreme pressure plate and an R6 racing clutch disc.
Their Xtreme pressure plate offers a 50-120% clamp load increase, moderate to heavy pedal feel, and is recommended for high performance street and racing applications. All diaphragms went through a four stage heating process for increased strength and unparalleled performance.
Next in this kit is the R6 racing clutch disc. This disc is an unsprung, rigid disc with 6 pads that is best suited for drag and road racing and handles heat better thanks to its increased surface contact area versus the 4 pad version of this disc, the R4. The R6 pads are composed of ceramic friction materials and the disc has a chome-moly hub that is heat treated for additional strength under high load engagements. Over stock, this disc is much better for faster shifting and significantly higher torque loads. Unlike the stock disc, this racing disk has a slightly shortened life span due to its rigid design and pad composition. This in turn is offset thanks to its fast, aggressive engagement for track use.
Clutch Kit Specs:
This clutch package is designed for high HP vehicles desiring a start performance similar to O.E. The pressure plate is Race Engineered (SS) and SFI approved with significant load increase over stage 1,2 pressure plates (+600-800 lbs.). Expect a pedal effort increase of 20%-25%. Discs are assembled with heat-treated wear resistant hubs; drive plates and springs for high load transfer and dependable operation. The sprung centers on the disc in conjunction with the marcel fin between the linings create a dual dampening effect that simulates O.E. start performance. A Performance Organic friction material with a high metal content increases torque and RPM capability and maintains low operating temperatures which reduces wear and glazing.
Stage 3 Daily Clutch Kits:
Recommended usages are daily, spirited street and occasional track
Conservatively rated to hold 500lbs/ft of torque
Featuring a solid-hub center section for use with an OE dual-mass flywheel
Advanced Clutch Technology (ACT) designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation, and CAM tools help ensure highly optimized performance, reliability, and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.
ACT clutch kits stand unequaled in terms of consistent pedal feel, high torque capacity, long wear life and durability. In-house manufacturing is critical in tuning components specifically to each individual application while maintaining the predictable ACT pedal feel across the entire catalog.
This clutch kit is their most popular and features a Heavy Duty pressure plate, a Performance Street sprung clutch disc, and an XACT Streetlite Flywheel.
The heavy duty pressure plate included offers a 20-50% clamp load increase, stock-moderate pedal feel, and heat treated diaphragms for increased strength and performance.
Next in this kit is the Performance Street clutch disc. This is the most popular sprung clutch disc and features high quality organic friction material with a high copper content for improved heat transfer and a steel backed lining for increased strength in burst load circumstances. This organic clutch disc has a significantly higher torque capacity than a stock disc but still retains a long life span and operates quietly and reliably.
The final main component is the XACT Streetlite Flywheel. This option is the most popular thanks to it versatility for street driving and drag/track style racing, its lighter weight for increased throttle response, and its single mass design.
Clutch Kit Specs:
Upgrade your BMW's performance with this stage 3+ clutch kit, boasting a carbon semi-metallic full-faced material for unmatched life, friction coefficient, and drivability. The double-sprung hub enhances flexibility with spring cover relieves, while heat-treated components in both hubs ensure strength and durability. Ideal for various driving scenarios, including street, drag, drift, autocross, road racing, pulling, rallye, and more.
Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Ridged Disc version.
FX100 (Stage I)
High performance street system
Holding capacity 70% over stock
Heavy-Duty reinforced pressure plate
Hi-Leverage™ pressure ring design
Ridged hub/ disc
Steel-backed organic friction material
This clutch kit does not include a flywheel.
| #SB533F-2 Variant | Use | Comments |
| "Sport" SPEC steel flywheel | daily driving; occassional drag strip | Use this with the SPEC steel single-mass flywheel. The clutch will be stiffer than the factory design but it will grab harder and stay connected with far less chance of slippage. The engagement point is changed but most drivers adjust within the first 100 miles. The failure-prone dual-mass flywheel is eliminated and a steel single-mass is used instead. Expect more noise and vibration from the steel but better reliability and slightly better performance. |
| "Super Sport" SPEC aluminum flywheel | more drag strip than street | Use this with the SPEC aluminum single-mass flywheel. The clutch will be stiffer than the factory design but it will grab harder and stay connected with far less chance of slippage. The engagement point is changed but most drivers adjust within the first 100 miles. The failure-prone dual-mass flywheel is eliminated and a lightweight aluminum single-mass is used instead. Expect a lot more noise and vibration with aluminum ("gearbox rattle") but better reliability and better performance. The engine will rev a lot faster too. |
An excellent performance upgrade so you can enjoy quicker revs and eliminate excess turbo lag. Made of high quality 6061-T6 billet aluminum, with a high-carbon steel replaceable friction surface, this flywheel from Clutch Masters is sure to be a great upgrade for anyone looking to reduce crankshaft drag and increase acceleration.
Typical benefits of a Clutch Masters lightweight flywheel:
Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.
FX250 (Stage II)
All Clutch Masters clutch kits come complete with:
This clutch kit does not include a flywheel.
Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Dampened Disc version.
FX400 (Stage 4)
High performance street system
Holding capacity 70% over stock
Heavy-Duty reinforced pressure plate
Hi-Leverage™ pressure ring design
Sprung hub/cushioned disc
Steel-backed 6-Puck Ceramic Sprung Disc friction material
*This clutch kit does not include a flywheel. Requires use of single mass flywheel
The FX350 System uses the Power Plus I Pressure Plate with Clutch Masters New Formula Button disc. This clutch is designed for the street enthusiast or weekend racer who plans to abuse their vehicle on an occasional basis and have a spirited driving style.
The FX350 clutch system has a higher holding capacity than a segmented Kevlar lining without compromising the street friendly characteristic Clutch Masters is known for. For year’s enthusiast have had to compromise durability for drivability and vise versa, however with Clutch Masters New Formula button we have closed the gap between these two tradeoffs.
*Does not include flywheel. Requires use of single mass flywheel
The FX350 System uses the Power Plus I Pressure Plate with Clutch Masters New Formula Button disc. This clutch is designed for the street enthusiast or weekend racer who plans to abuse their vehicle on an occasional basis and have a spirited driving style.
The FX350 clutch system has a higher holding capacity than a segmented Kevlar lining without compromising the street friendly characteristic Clutch Masters is known for. For year’s enthusiast have had to compromise durability for drivability and vise versa, however with Clutch Masters New Formula button we have closed the gap between these two tradeoffs.
*This clutch kit does not include a flywheel. Requires use of single mass flywheel
Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.
FX250 (Stage II)
All Clutch Masters clutch kits come complete with:
This clutch kit does not include a flywheel. Requires use of single mass flywheel
Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Dampened Disc version.
FX100 (Stage I)
High performance street system
Holding capacity 70% over stock
Heavy-Duty reinforced pressure plate
Hi-Leverage™ pressure ring design
Sprung hub/cushioned disc
Steel-backed organic friction material
This clutch kit does not include a flywheel. Requires use of single mass flywheel
Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.
FX250 (Stage II)
All Clutch Masters clutch kits come complete with:
This clutch kit does not include a flywheel. Requires use of single mass flywheel
Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Dampened Disc version.
FX400 (Stage 4)
High performance street system
Holding capacity 70% over stock
Heavy-Duty reinforced pressure plate
Hi-Leverage™ pressure ring design
Sprung hub/cushioned disc
Steel-backed Ceramic lined Sprung Disc friction material
*This clutch kit does not include a flywheel. Requires use of single mass flywheel
Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.
FX250 (Stage II)
All Clutch Masters clutch kits come complete with:
This clutch kit does not include a flywheel. Requires use of single mass flywheel
Ensure optimal performance on the dragstrip or road course with the Spec Mini Twin Clutch Kit for your BMW M3. Stock clutches may falter under high RPM engagement or repeated launches, especially in modified or supercharged BMWs. The Spec Mini Twin clutch kit, featuring a double sprung hub and carbon semi-metallic friction surface, provides a lightweight solution with OEM-like pedal effort. Experience lightning-fast shifting, even at the top of your RPM range, making it ideal for aggressive drag strip launches or extended road course use. The kit includes an alignment tool and bearing for added convenience.
Revitalize your BMW's shifting experience with the Turner Motorsport Double Adjustable Short Shift Kit, designed to address the long throw shifters that have historically plagued BMWs. Turner's short shifters boast height and throw adjustability, offering a double adjustment feature to help you rediscover the joy of driving.
Curious about the long shifter? Turner's rally lever extension, available separately, provides a Quick Change option. The lower part of the short shifter is keyed, simplifying the transition between long and short levers effortlessly. Whether your vehicle is dedicated to the track, a weekend adventure, or daily commuting, Turner's short shifter kit is tailored to meet your diverse driving needs.
Installation is a breeze compared to competitors, thanks to the custom bearing cup allowing for easy inside-car installation (for applications using the stock shifter arm).
Upgrade your shifting pleasure further with the Turner Weighted Shift Knob - a 6-speed coin-designed knob that adds a touch of excitement to your driving, promoting faster engagement and an overall improved shifting experience.
Pair the knob with Turner's short shift kits for a complete shifter makeover. Crafted from billet 6061-T6 aluminum, CNC machined for precision, and anodized for durability, this knob is designed for seamless compatibility with OE BMW shift knobs.