RacingDiffs Preload Shims for BMW ZF Limited Slip Differentials

Upgrade your BMW’s ZF LSD with RacingDiffs preload shims, designed to restore and enhance differential performance in classic models like the E30, E36, and E34. Over time, factory preload shims (Belleville washers) can weaken or fail due to heat and stress, leading to reduced locking and traction. These replacement shims are engineered for enthusiasts who demand reliable performance from their LSD-equipped BMW.

• Material & Hardness: Extra hardened to 55 HRC for superior longevity and resistance to extreme conditions.
• Strength: 30% stronger than OEM shims, ensuring consistent preload and improved LSD function.
• Fitment: Available in three sizes—168mm, 188mm, and 210mm—to match various BMW ZF differentials. Unsure of your fitment? Send your VIN for confirmation.
• Performance: Increased preload delivers better locking action and traction, improving handling in all driving scenarios.
• Recommended Maintenance: For optimal results, replace clutch plates during the rebuild, as worn plates are a common cause of differential overheating.

Compatibility Notes:

• 210mm preload shims do not fit GKN differentials used in E46, E92, E60, E63, and Z4 M models.
• For M3, M5, M6, and Z4M models, see RacingDiffs LSD Clutch Pack + Free Play Delete Kits.

Maintain your BMW’s differential the right way—choose RacingDiffs for precision-engineered, enthusiast-grade LSD components.