ClutchMasters Performance Clutch Kits

BimmerWorld has brought the ultra-high performance and reputation of ClutchMasters into the BMW market. ClutchMasters build clutch kits for a broad range of BMW applications in multiple stages to suit your driving needs, from street to devoted track car. Each "Stage" is specifically designed and engineered for specific power outputs, street/track uses, and driving styles and needs. These clutches represent years of R&D work to create a solid clutch kit that's easy on your drivetrain but get the power to the ground effectively.

Built exclusively for us, these BimmerWorld-spec kits start out as new Sachs clutches. The kit isn't just a beefed up Sachs unit, the real magic is in the casting of the pressure plate that clamps on the disc. The BimmerWorld/ClutchMaster's Power Plus pressure plate uses a high leverage design with a ductile iron casting to significantly increase plate load while keeping excessive pedal pressure at a bare minimum. Not only does this feature reduce aggressive pedal pressure that can wear your leg out on the street and track, it reduces the amount of load against the crankshaft reducing thrust bearing wear, throw-out bearing wear, and crank walk. The pressure plate also features a reinforced, FOUR strap design and heavy duty rivets for increased longevity and strength during hard driving. These areas in a stock pressure plate do no last with aggressive street and track driving.

Stage 1- Organic Steel Back Heavy Duty Street System (Picture 1)

The Stage 1 uses the Power Plus pressure plate with a custom heavy-duty steel back organic friction disc for 70% more holding capacity over a stock clutch assembly. It is specifically designed for extended wear and additional clamping force needed for heavy-duty street use, autocross, and fairly stock street cars participating in open track/driving schools. The disc incorporates a solid hub to work in conjunction with the stock dual mass flywheel design for smooth engagement*. It features only slightly increased pedal pressure, longer life than stock, and normal clutch feel during engagement and disengagement for a very smooth operation.

Stage 2 - Kevlar Steel Back System (Picture 2)

The Stage 2 uses the Power Plus pressure plate and a steel backed Kevlar disc for 70% more holding capacity over a stock clutch assembly. This clutch is designed for the medium-modified street car that sees numerous autocrosses and driving school/track days per year. The Stage 2 offers similar torque holding capacity to the Stage 1, however, it's life expectancy is increased 2-3 times with the Kevlar disc. The Kevlar friction material is non-abrasive and doesn't score the mating surfaces. The disc incorporates a solid hub to work in conjunction with the stock dual mass flywheel design for smooth engagement*. It features only slightly increased pedal pressure, significantly longer life than stock, and normal clutch feel during engagement and disengagement for the smoothest operation of any stage we offer. The downside to this clutch is it must be broken in properly. An improper break-in of a Kevlar clutch will great reduce longevity and clutch hold.

Stage 3 - Segmented Kevlar Steel Back System (Picture 3)

The Stage 3 uses the Power Plus pressure plate with a steel back segmented Kevlar disc for 110% more holding capacity over a stock clutch assembly. This clutch is designed for the highly tuned street cars seeing numerous autocrosses and driving school/track days per year. The Stage 3 features slightly increased pedal pressure, long life disc, and positive engagement. The disc incorporates a solid hub to work in conjunction with the stock dual mass flywheel design for smooth engagement*. The clutch engagement is a bit more firm than the Stage 2. The downside to this clutch is it must be broken in properly. An improper break in of a Kevlar clutch will great reduce longevity and clutch hold.

Stage 4 & 4.5 - Sprung Ceramic 6 & 4 Puck System (Picture 4, 6 Puck)

The Stage 4 uses the Power Plus pressure plate with a custom, extremely durable, ceramic disc for 170% more holding capacity over a stock clutch assembly. This is a great devoted track clutch for drivers who are rulebook limited to stock diameter clutch kit. It is available in a 4 or 6 puck configuration, with the 4-puck being the more aggressive setup. The disc incorporates a solid hub to work in conjunction with the stock dual mass flywheel design for smooth engagement*. This disc is designed for long life, outstanding holding capacity, and rapid heat dissipation. Warning: Due to the solid (no Marcel) friction rivet design, the Stage 4 disc engages quickly (Stage 4.5 engages even harder) and can cause increased wear on the drivetrain with abusive use. It also may chatter slightly in first and reverse. To help alleviate this problem, ClutchMaster only uses premium ceramic friction material. This kit also works well for devoted track cars that do not have the ability for an extended break in period. Ceramic breaks in easy, especially compared to Kevlar.

Kits include throw-out bearing, clutch disc, pressure plate.

If a ClutchMaster clutch kit is planned to be installed in conjunction with a used flywheel the flywheel MUST be professionally resurfaced beforehand. Failure to resurface a used flywheel will void warranty. Please contact us for further information concerning flywheel resurfacing.

*Applications having a stock single mass flywheel will have a sprung hub disc. If your car came stock with a dual mass flywheel but you plan to use an aftermarket single mass unit, please contact us if you plan to use a sprung hub disc. Bimmerworld also carries aluminum single mass flywheel / sprung hub clutch kit combos.

**E30 318 (M42) will need a different starter, flywheel, and throw out bearing. Call for assistance.

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