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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.
When it's time to replace your car's clutch, you face a crucial decision: upgrade or stick with stock? In many cases, upgrading is the preferred choice, especially when you pair the right clutch with a single mass flywheel. The secret to achieving the perfect blend of performance and driving experience lies in selecting a sprung hub clutch. This option allows you to enjoy the advantages of a single mass flywheel while eliminating issues like noise, vibration, and harshness (NVH), ensuring an outstanding driving performance.
SPEC's Stage 2 clutch features a full faced pure Kevlar disc complete with steel backing. This lining offers outstanding drivability 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 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 billet single 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 features an Xtreme pressure plate, a Performance Street sprung clutch disc, and an XACT Streetlite Flywheel.
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 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.
Clutch Kit Specs:
| #SB533H-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. |
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:
BMW E60 E9X XACT Flywheel Streetlite is an advanced performance flywheel engineered to offer substantial improvements over stock components. This lightweight flywheel is designed for durability and enhanced performance, making it an excellent choice for both street driving and drag racing.
Upgrade your BMW with the BMW E60 E9X XACT Flywheel Streetlite for enhanced performance and durability.
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.
| #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. |
