Gear ratio swap set for BMW Motorsport Z4 M

Thinking of changing the gear ratio of your BMW differential? Our Gear Ratio Swap Set is an absolute must-have, providing all the essential components needed to complete a successful swap and enhance your vehicle's performance.

Key Features:

• Complete Kit: This set includes everything required for a seamless gear ratio change, ensuring precise fitment and optimal functionality.
• Enhanced Performance: Adjusting your gear ratio can lead to significant improvements in acceleration, top speed, and overall drivability, tailored to your specific driving style.

Kit Includes:

• Adjustment Shim Set / C Clip Set: Ensures proper alignment and positioning of internal components.
• Pinion Oil Seal: Maintains optimal lubrication and prevents oil leaks.
• Large Pinion Bearing: Necessary to install onto your new pinion gear.
• Crush Sleeve Shim: Essential for achieving the correct preload on the pinion gear.
• Pinion Depth Shim Set (3.3mm - 3.7mm): Allows for precise positioning of the pinion gear.

Fitment Confirmation: To ensure you get the right set for your BMW, follow these steps:

• VIN Confirmation: Simply send us the last 7 digits of your VIN, and we will confirm if this set fits your requirements as soon as possible.

Why Choose Our Gear Ratio Swap Set?

• Quality Assurance: Each component is manufactured to meet or exceed OEM specifications, ensuring long-lasting performance and reliability.
• Expert Support: We provide comprehensive guides and resources to help you perform the swap with confidence.

Backlash adjustment shims 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
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-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