BMW Performance Clutch Kits & Parts for BMW 3 Series E30 (1984-1991)

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These heavy-duty clutch kits use aluminum lightweight flywheels with sport clutch components to give your clutch the grip and clamping force it needs to cope with high torque upgrades. Our kits were developed through racing programs by companies affiliated with our own race team - JB Racing, Sachs Sport, OS Giken, and UUC Motorwerks. JB Racing is the leader in aluminum lightweight flywheel upgrades. They are direct replacements for the stock dual-mass flywheels with steel contact surfaces and computer balanced to 14,000 RPM. JB has partnered with Sachs to spec sport/HD clutch discs and pressure plates that work seamlessly with their aluminum flywheels. The result is a clutch/flywheel upgrade package that functions a lot like the original clutch combo with near-stock levels of effort and engangement but with a much higher torque capacity. Don't let the clutch be your weak link in a highly tuned car!

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Clutch Slave Cylinder

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T#:373184

Part#: 21521116300

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$ 28.99 USD

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$ 28.99 USD

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Replaces your leaking slave cylinder

Mechanical Input Clutch Cylinder

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T#:373185

Part#: 21521152658

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$ 52.99 USD

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$ 52.99 USD

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Sometimes these units can wear and develop a squeak when depressed. This transfers fluid to the output cylinder in order to engage and disengage the clutch. Replace yours and remove that squeaky piston.

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JB Racing Lightweight Aluminum Flywheel & Clutch Kit

T#:15777312

Part#: 520-040-215-KT

Back Ordered

$ 1,003.99

This product was last offered at the strikethrough price on
05-07-2026

$ 994.99 USD

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$ 994.99 USD

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A lightweight aluminum flywheel is a great way to increase throttle response and free up horsepower by reducing drivetrain loss. Factory flywheels are built to minimize engine and transmission vibrations, making them heavier and requiring more energy to make them spin. An aluminum flywheel can save lots of weight over the stock steel unit - sometimes over 50%. While the dampening effect of the stock flywheel is reduced, most enthusiasts would agree that the increase in performance is well worth it. In addition, the lighter flywheel allows the engine to spin more freely, improving throttle response. This JB Racing lightweight aluminum flywheel kit and is designed to be used with the included factory clutch, making replacement and service easy and inexpensive, especially compared to specialized racing clutches. It also preserves the driveability of your car on the street, and enthusiasts tolerant of a mild to moderate NVH increase will be especially taken with this setup. In addition, the JB Racing flywheel can be easily rebuilt with a new clutch contact surface, allowing you to enjoy faster revs and superior response for many years to come. Stock Flywheel Weight: 27 lbs. JB Racing Lightweight Aluminum Flywheel: 9 lbs.

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