FJ Motorwerkes Rear Differential Bolt Collar Upgrade Kit – BMW X3M / X4M
FJ Motorwerkes Rear Differential Bolt Collar Upgrade Kit – BMW X3M / X4M
Improve the precision, response and consistency of your BMW with the FJ Motorwerkes Rear Differential Bolt Collar Upgrade Kit.
This collar kit is designed to reinforce and stabilise the rear differential mounting arrangement in high-performance X3M and X4M applications. Designed for BMW F97 X3M and F98 X4M, this upgrade is suitable for performance road cars, track-focused builds and vehicles where more consistent suspension behaviour is required.
Key features
- Helps reduce unwanted movement around the differential mounting bolt
- Supports more consistent driveline behaviour under high torque
- Suitable for tuned, drag-raced and track-driven vehicles
- Purpose-built upgrade for F97 X3M and F98 X4M platforms
Installation
The differential mounting area should be inspected before installation. Professional workshop fitting and use of the correct torque procedure are strongly recommended.
Fitment note: Confirm exact kit contents, supported model years, supplied bolt compatibility and installation torque specifications before publishing.
Boost & Tune Bavarian can supply and professionally install this component in-house. A wheel alignment or suspension setup may be required after installation.
PROFESSIONAL FITTING AVAILABLE
Need M Lab by Boost & Tune to install this?
Have this part professionally fitted, checked and configured by our BMW performance workshop.
Product: FJ Motorwerkes Rear Differential Bolt Collar Upgrade Kit – BMW X3M / X4M
Workshop installation in Albion, Victoria
Vehicle compatibility
Fits these BMW platforms
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