Revshift polyurethane differential bushings completely replace the oem rubber bushings on the E46 M3 and Z4M. These bushings stiffen the differential improving the vehicles handling capabilities.

• Improves handing
• Will not wear out like oem bushings
• Properly dampens the differential
• Includes new rear bolts and washers
• Teflon prelube included
• Lifetime warranty

Lifetime warranty

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