Maximum response. Minimum inertia. Motorsport intent.

The Performance Clutches Stage 4 Sport Single Mass Flywheel Kit for BMW E36 and E46 platforms is engineered for drivers who demand uncompromising drivetrain precision and the fastest possible engine response. Designed for serious competition environments, this system pushes rotational efficiency and torque capacity to the next level.

At its core is our 7.2kg lightweight single mass flywheel, manufactured from 4140 forged steel with an integral ring gear. This high-strength construction delivers exceptional durability and heat resistance while dramatically lowering rotational mass compared to OE dual-mass systems. The reduced moment of inertia enables ultra-fast rev climb, sharper throttle modulation, and extremely rapid gear transitions — critical in race and drift applications.

The cover assembly incorporates a QT450 steel pressure plate, offering outstanding thermic capability and clamp load stability under sustained high-temperature and high-load operation.

What defines Stage 4 Sport is its rigid ceramic 6-paddle friction disc. By eliminating the sprung hub and marcel cushioning, rotating mass is further reduced, lowering inertia within the clutch assembly itself. The result is even faster engine response and more direct torque transfer. The ceramic paddle configuration provides immediate engagement, exceptional heat resistance, and maximum slip control under extreme load.

This is a fully competition-focused system.

Why this clutch kit stands out

• Rigid Ceramic 6-Paddle Disc – Direct, uncompromising engagement with reduced rotational mass for faster drivetrain response.

• Reduced Internal Inertia – Rigid hub design minimises energy loss and sharpens throttle and shift response.

• 7.2kg 4140 Forged Steel Flywheel – Lightweight yet exceptionally strong with integral ring gear for long-term durability.

• QT450 Steel Pressure Plate – Superior thermal stability ensures consistent clamp load under extreme conditions.

• Motorsport-Engineered Architecture – Designed for aggressive launches, clutch kicks, and sustained high-RPM operation.

Ideal for you if you:

• Compete in drifting, circuit racing, or time attack.
• Operate a heavily modified, high-boost E36 or E46 build.
• Prioritise ultra-fast rev response and instantaneous torque transfer.
• Accept race-focused engagement characteristics in exchange for maximum performance.

The Stage 4 Sport SMF kit is not a street compromise — it is a purpose-built motorsport solution engineered for rapid response, reduced inertia, and uncompromising torque control.