Clutch Masters 850 PRO Twin Disc Clutch, Aluminum Flywheel - 340i (03058PTD8RA)

A single-disc clutch eventually runs out of grip once a B58 is making serious torque. The 850 PRO spreads the load across two 8.5-inch ceramic discs, and this version uses the rigid race pack with a lightweight aluminum flywheel for the six-speed 340i.

What you get

• Rigid race clutch pack: two ceramic discs on a driven rigid hub.
• Torque capacity estimated at 800 lb-ft by Clutch Masters.
• Twelve heat-treated 4140 steel posts with a 12-point nut-and-stud mount, replacing an older six-post aluminum design.
• 6061-T6 billet aluminum flywheel, hard-anodized, with a replaceable friction insert and SFI 1.2 certification.
• Fully serviceable, with rebuild kits available.

Good to know

• Clutch Masters builds the 850 PRO for heavy street and track use. The same kit is also offered with a sprung race pack.

Brand: Clutch Masters · Part #: 03058PTD8RA

Ships from the brand or distributor, usually in 3-7 business days.

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.