215MM B58 P2

Technical Parameters

Product Advantage

• The 215mm/8.5-inch dual-disc design achieves maximum torque output.

This 215mm (8.5-inch) dual-disc racing clutch for the BMW B58 engine consists of two friction plates, nearly doubling the contact area compared to the original single-disc clutch. The clamping force is evenly distributed across the two discs. Depending on the configuration of the friction plates and the pressure plate, this kit can provide approximately 600+HP. This is necessary for M340i/330i after upgrades or hybrid turbocharged modifications, as the original clutch is prone to losing grip under high loads.

• Anti-slip grip under full boost

Slippage is the primary manifestation of excessive power from the B58 engine. Our anti-slip racing clutch increases the friction coefficient by approximately 40% compared to the original components. Under strong traction or repeated starts, it achieves nearly perfect power transmission efficiency without the "release" phenomenon at high RPMs. The power is directly transmitted to the drive shaft instead of being lost as heat, so the throttle response is more sensitive, the shift recovery is faster, and the acceleration performance remains stable throughout each lap.

• Heat management to prevent overheating

The anti-overheating clutch kit relies on the cooling friction surface and expanded heat dissipation area to quickly release heat. It uses precision high-temperature ceramic friction plates.

• Long-lasting and tested

Each set of components undergoes durability testing. The production line has been certified by IATF 16949 - reliability is the actual test result, not a claim. The number of replacements is reduced, whether for daily use vehicles or professional racing cars, the operating cost is lower.

• Street driving without compromise

The street version maintains the pedal force level consistent with the factory - no heavy pedal feeling, no vibration; while the racing version optimizes the response points on the track. The spring hub effectively reduces the vibration of the transmission system, and the lightweight flywheel lowers the rotational mass, achieving faster speed output. The final result: an upgraded performance clutch for the M340i, truly suitable for daily commuting, not just for race days.

• Specifically designed for specific models, not universal parts

Compatible models include BMW M340i, 330i, M140i, M240i, 340i, 440i, and those with the B58 engine from Toyota Supra A90. It can be directly bolted in, available in neutral or custom packaging, with a minimum order quantity of 1 unit, and enjoys factory direct supply technical support.

Product Uses

• Daily Street Driving and Intense Circuit Racing

Designed for real roads rather than just circuits. After upgrading the B58 M340i / 330i, the factory clutch often slips at the third or fourth gear during the peak turbo boost. This 215mm dual-disc clutch kit restores full grip while maintaining the same pedal force as the factory version. It is smooth and controllable for commuting, overtaking, and weekend mountain driving; the spring hub absorbs the vibrations of the transmission system, and the organic ceramic street discs engage quietly and without jolts in congested traffic.

• Circuit Day and Intensive Driving

The biggest enemy on the track is heat. Continuous launches, high RPM upshifts, and twenty minutes of continuous sessions will push the factory clutch beyond its heat limit, causing heat loss and softening of the pedal. This set of sintered metal friction plates remain stable and have zero heat loss at temperatures above 1000°C, and the enlarged and grooved friction surface can quickly dissipate heat during the intervals between sessions. Drivers can achieve consistent engagement points and unchanged pedal feel from the first lap to the last.

• Straight-Line Acceleration and Launching with Launch Control

Launch control best demonstrates the value of the dual-disc structure. The impact load generated by the high RPM launch clutch instantaneously, a single-disc clutch simply cannot lock. This 8.5-inch competitive clutch thanks to the two-disc friction surfaces distributes the clamping force, passing without slipping or burning the disc and glaze. The extremely high transmission efficiency ensures that every horsepower of the B58 is transmitted to the tires instead of being wasted as heat.

• Drifting and Extreme Clutch Operating Limits

Drifting is the most destructive to the clutch: the impact load generated by the high RPM launch clutch instantaneously, the handbrake switch, and high RPM continuous semi-engagement. The dual-disc structure can absorb the torque shock generated by the launch clutch without glazing, and the sintered friction material, even when burned to smoke, can maintain a consistent engagement point. The optional lightweight flywheel reduces the rotational inertia, and the speed response in the switching action is faster; the reinforced cover and spring hub can withstand the impact loads from chasing two cars and long-term large-angle sliding.

• Heavy Modification: Combining Turbochargers and High Horsepower

When the B58 is upgraded with a hybrid turbo, enhanced fuel supply, and rewritten with the third-generation program, the output can exceed 600 horsepower, far exceeding the capacity of any factory clutch. This set of components is precisely designed for this purpose: the disc surface curve, friction formula, and clamping force are all matched based on the actual torque characteristics of the B58, rather than being modified from general parts. Replacing the factory parts is just a repetition because it was not designed for torque modification. This set of components is an upgrade rather than a restoration, including flywheels, friction plates, pressure plates, and a complete set of bolts, direct installation in the original position.

• Upgrade Replacement after Factory Clutch Failure

Most customers find us after their factory parts fail: full boost slippage, burnt smell after intense driving, soft pedals on the track. Replacing with factory parts is just a repeat of the same mistake because it was not designed for torque modification. This set of components is an upgrade rather than a restoration, including flywheels, friction plates, pressure plates, and a complete set of bolts, direct installation in the original position.

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