Spec Stage 2 Clutch Kit Non-SAC SB532-2 – BMW 135i / 335i (N54)

OVERVIEW

The SPEC Stage 2 clutch kit uses a segmented or full-faced pure Kevlar disc with steel backing. The lining keeps the easy drivability of the Stage 1 but offers slightly longer life and higher torque capacity. The hub is double sprung with spring cover relieves for flexibility, and the assembly is heat treated for strength and durability. SPEC recommends it for street, drag, pulling and autocross use.

This is the non-SAC version of the kit, built to run on a single mass flywheel. It is not compatible with the OEM dual mass flywheel, so a matching SPEC single mass flywheel must be fitted with it.

SPECS

• Stage 2 single disc clutch kit
• Torque capacity: 485 ft-lbs
• Friction material: pure Kevlar, segmented or full-faced, with steel backing
• Hub: high-torque double sprung hub with spring cover relieves, heat treated
• Pressure plate: SPEC high-clamp
• Character: street drivable; SPEC lists street, drag, pulling and autocross
• Flywheel requirement: single mass flywheel required — not compatible with the OEM dual mass flywheel

PARTS INCLUDED

• Pressure plate
• Clutch disc
• Pilot bearing
• Release (throwout) bearing
• Alignment tool
• SPEC clutch kits supplied for use with a SPEC flywheel include pressure plate, disc, pilot bearing, release bearing and alignment tool.
• When a SPEC flywheel is ordered it ships with pressure-plate-to-flywheel bolts.

TECH RESOURCES

Additional Parts Required

• SPEC single mass flywheel — REQUIRED. This kit will not run on the OEM dual mass flywheel. Choose by production date: SPEC 8-bolt steel SMFW SB53S-2 (2007 – 1/2009), SPEC 8-bolt aluminium SMFW SB53A-2 (2007 – 1/2009), SPEC 6-bolt steel SMFW SB53S-3 (2/2009 on) or SPEC 6-bolt aluminium SMFW SB53A-3 (2/2009 on).
• Pilot bearing, release bearing and alignment tool are included in the kit — no separate purchase needed.
• Installer-supplied: transmission jack, clutch alignment access, new flywheel-to-crank bolts and BMW-specification gearbox oil if the transmission is drained.

Installation

• SPEC does not publish a downloadable installation PDF for this application — follow the printed installation and break-in instructions supplied with the kit.
• Installation requires removal of the transmission and should be carried out by a qualified technician. Inspect the pilot bearing bore, clutch fork, release-bearing guide sleeve and slave cylinder while the gearbox is out.
• Bed the clutch in with light, gradual engagements before applying full load.

Notes

• Flywheel bolt pattern changes with production date — 8-bolt through 1/2009 and 6-bolt from 2/2009. Confirm your production date with Speed Logic before ordering.

PART NUMBER

• SB532-2

VEHICLE APPLICATIONS