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  • Rebuilt BMW M Variable LSD: E46 M3, E90/E92 M3, E60 M5, E63 M6, Z4 M

    RD0007

    Type

    Rebuilt BMW M Variable GKN V2 Limited Slip Differential (LSD) Carrier — Eliminate “M Clunk”, Boost Grip

    Experience a remarkable improvement in the performance of your BMW M3, M5, M6, and Z4 M with our fully rebuilt M Variable GKN V2 LSD carrier. Enhanced with RacingDiffs’ Molybdenum-ceramic clutch pack and a Free Play Delete shim that eliminates the notorious “M clunk,” this carrier delivers increased differential lock, superior durability, and confident performance—daily and on track.

    BMW E46 M3 GKN LSD rebuild kit by RacingDiffs – solves differential clunk and restores performance to E90, E92, E60, E63, and Z4M models.

    Features
    • Eliminates “M clunk”: Free Play Delete shim removes slack that causes the well-known knock.
    • More grip & lock: Noticeably increases differential lock for stronger traction and drive off corners.
    • New clutch pack: RacingDiffs Molybdenum-ceramic plates improve durability and reduce wear.
    • Road & track ready: Tuned for quiet daily operation with reliable performance on circuit days.
    Performance Benefits
    • Stronger, more predictable traction and corner exit.
    • Smoother driveline behavior—no knock, clunk, or lash.
    • Improved stability and confidence at the limit.
    • Reduced wear and heat thanks to upgraded clutch materials.
    Technical Specs / Installation Tips
    Carrier type BMW M Variable GKN  LSD (rebuilt)
    Clutch material RacingDiffs Molybdenum-ceramic clutch pack (new)
    Free play delete Included shim to remove lash and eliminate “M clunk”
    Backlash target 0.08–0.12 mm on most BMW ring-and-pinion sets
    • Carrier-adjustment shims required: Needed to set preload and backlash correctly.
    • Shims help you: Dial factory backlash, center the ring gear for a clean contact pattern, and eliminate whine, premature wear, and heat build-up.
    • TIP: We stock complete shim/C-clip packs in 0.1 mm increments for precise setup.
    • Watch before you wrench: Our 8-minute video covers bearing pressing, backlash measurement (dial indicator), shim selection, and contact-pattern checks with marking compound.
    Fitment
    • BMW E46 M3 (2005–2006)
    • BMW E90 / E92 M3
    • BMW E60 M5
    • BMW E63 M6
    • BMW Z4 M