XClutch 9" Twin Disc Clutch Kit (6-Bolt, Rigid Ceramic) – BMW 1M / 135i / 335i (N54/N55)

OVERVIEW

This is the Stage 5 ceramic version of XClutch's 9 inch twin-disc kit for the 6-bolt crankshaft cars — the E82 1 Series M and the N55 135i and 335i. Two rigid-hub ceramic discs give the highest heat and torque capacity in the 23596 family, which is what a high-power motorsport build needs when a single disc runs out of clamp.

A chromoly performance flywheel is supplied in place of the factory dual-mass unit, along with the release bearing, pilot bushing, bolts and alignment tool.

SPECS

• Stage 5 twin-disc clutch kit
• Friction material: ceramic
• Disc hub: solid (rigid)
• Clutch disc diameter: 9.055 in
• Flywheel: XClutch chromoly performance flywheel, included
• Crankshaft: 6-bolt
• Replaces the factory dual-mass flywheel assembly

PARTS INCLUDED

• Lightweight alloy pressure plate
• 2 x rigid ceramic friction discs
• XClutch chromoly performance flywheel
• Flywheel and pressure plate bolts
• 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.

Installation

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

Notes

• Rigid-hub twin-disc clutches transmit more drivetrain noise than a sprung street disc, and ceramic friction material engages more abruptly. This is a motorsport specification.
• This is the ceramic counterpart to the organic XKBM23596-2G kit. Confirm which friction material suits your use before ordering.
• Price is for parts only; labor is not included.

PART NUMBER

• XKBM23596-2E

VEHICLE APPLICATIONS