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    Home / Special tools, upgrades and spares / BMW M Gear Ratio Swap Set - M3, M5, M6, Z4M Differential Upgrade
    BMW Motorsport gear ratio swap kit (E46 M3, E92 M3)
    BMW E36 E36 Gear ratio swap set
    BMW Motorsport gear ratio swap kit (E46 M3, E92 M3)
    BMW E36 E36 Gear ratio swap set

    BMW M Gear Ratio Swap Set - M3, M5, M6, Z4M Differential Upgrade

    RD3051

    214,00€ - 317,00€
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    Upgrade Your BMW M Differential with Our Gear Ratio Swap Set

    Enhance the performance and driving experience of your BMW M3, M5, M6, or Z4M with our Gear Ratio Swap Set. This comprehensive kit includes all the essential components required to successfully change the gear ratio of your differential, ensuring optimal performance and reliability.

    Key Features:

    • Complete Kit: Contains all necessary parts to facilitate a seamless gear ratio swap, preventing common issues and ensuring a precise fit.
    • Enhanced Performance: Adjusting your gear ratio can significantly improve acceleration, top speed, and overall drivability, making your BMW even more enjoyable to drive.

    Kit Includes:

    • Adjustment Shim Set: Ensures proper alignment and positioning of internal components.
    • Pinion Oil Seal: Prevents oil leaks and maintains optimal lubrication.
    • Large Pinion Bearing: Necessary to install onto new pinion from your new gear set.
    • Crush Sleeve Shim: Essential for achieving the correct preload on the pinion gear.
    • Pinion Position Shim Set (2.5 - 3.5mm): Allows for precise positioning of the pinion gear.

    Fitment Chart:

    • Variant 1 (V1):

      • E36 M3 (3.2 S52)
      • E46 M3
      • E28 M5, M535
      • E34 M5
      • E39 M5
      • E24 M6
      • E60 M5
      • E63, E64 M6
      • Z4 M

    • Variant 2 (V2):

      • E90, E92, E93 M3

    How to Guide: Not sure how to change the gear ratio properly? Check out this video for a detailed step-by-step guide to ensure a successful installation.

    BMW E46 m3 differential gear ratio 4.10 installation

    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:

    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


    Or simply send us the last 7 digits of your VIN and we will confirm if they fit with your requirements as soon as possible.