RacingDiffs Precision Shim Kit for BMW Differentials

Achieve precise backlash adjustment when upgrading or servicing your BMW differential. The RacingDiffs Precision Shim Kit is designed specifically for BMW enthusiasts seeking optimal performance and longevity from their drivetrain components.

• Compatibility: Fits BMW differentials with 168mm, 188mm, and 210mm ring gears. Compatible with E21, E28, E30, E36, E34, E32, E31, and Z3 models.
• Included Shims: Kit contains 10 shims, ranging from 1.0mm to 2.0mm in 0.1mm increments, allowing for precise backlash tuning.
• Application: Ideal for differential rebuilds, LSD installations, or gear ratio changes where accurate backlash setting is critical.
• Benefits: Proper backlash adjustment reduces noise, prevents premature crown gear wear, and ensures smooth, reliable differential operation.

OEM Part Numbers:

• 168mm: 33139065731, 33-13-9-065-731, 33 13 9 065 731, 33.13.9.065.731
  33139065732, 33-13-9-065-732, 33 13 9 065 732, 33.13.9.065.732
  33139065733, 33-13-9-065-733, 33 13 9 065 733, 33.13.9.065.733
• 188mm: 33139065734, 33-13-9-065-734, 33 13 9 065 734, 33.13.9.065.734
  33139065735, 33-13-9-065-735, 33 13 9 065 735, 33.13.9.065.735
• 210mm: 33139065736, 33-13-9-065-736, 33 13 9 065 736, 33.13.9.065.736
  33139065737, 33-13-9-065-737, 33 13 9 065 737, 33.13.9.065.737

This kit is for BMW owners and builders who demand precise, reliable differential setup. No assumptions—just the technical solution you need for exact backlash adjustment.