XClutch 9" Twin Disc Clutch Kit – BMW M2 / M3 / M4 (F80 / F82 / F87)

OVERVIEW

XClutch's 9 inch twin-disc kit for the BMW S55 platform, offered in two friction materials. The Stage 4 rigid organic version suits high-horsepower street-driven M cars where pedal feel and reliability matter; the Stage 5 rigid ceramic version raises heat and torque capacity for motorsport use, at the cost of a sharper take-up.

Both versions replace the factory dual-mass flywheel with a chromoly performance unit and ship with the release bearing or internal hydraulic release bearing, pilot bushing, bolts and alignment tool. Choose the friction material at checkout.

SPECS

• Stage 4 — 9 in twin rigid organic (XKBM23560-2G): recommended for high-power street use
• Stage 5 — 9 in twin rigid ceramic (XKBM23560-2E): recommended for motorsport use
• Disc count: twin
• Disc hub: solid (rigid)
• Clutch disc diameter: 9.055 in
• Pressure plate: lightweight alloy
• Flywheel: XClutch chromoly performance flywheel, included
• Replaces the factory dual-mass flywheel assembly

PARTS INCLUDED

• Lightweight alloy pressure plate
• 2 x rigid friction discs (organic or ceramic, per the option selected)
• XClutch chromoly performance flywheel
• Flywheel and pressure plate bolts
• Release bearing and carrier, or internal hydraulic release bearing
• Pilot bushing
• Clutch alignment tool
• Spline grease

TECH RESOURCES

Additional Parts Required

• None. XClutch supplies the chromoly flywheel, release bearing, pilot bushing, bolts, alignment tool and spline grease in the kit.
• Break-in is required. XClutch specifies driving the vehicle gently for the first 1,000 km (roughly 620 miles), avoiding aggressive launches; low-rpm engagements bed the friction material in properly.
• XClutch recommends inspecting the concentric slave cylinder while the transmission is out and replacing it if worn, since the labor is already committed.
• Professional installation; transmission removal is required. Manual-transmission cars only — DCT cars are not applicable.

Installation

• XClutch Technical Service Bulletin TSB-166 — twin disc clutch kits (PDF)
• XClutch Technical Service Bulletin TSB-269 — BMW S55 (PDF)
• XClutch Technical Service Bulletin TSB-214 (PDF)

Notes

• Manual-transmission cars only. Confirm your model and transmission before ordering.
• Rigid-hub twin-disc clutches transmit more drivetrain noise than a sprung street disc.
• Price is for parts only; labor is not included.

PART NUMBER

• XKBM23560-2G — Stage 4, 9 in twin rigid organic discs
• XKBM23560-2E — Stage 5, 9 in twin rigid ceramic discs

VEHICLE APPLICATIONS