Unicorn Egg - Billet Aluminum Rear Differential Rear Bushing for F97/F98 X3/4 M
Application: F97/F98 X3M/X4M
Replaces the rear differential OEM rear rubber bushing which allows too much flex and movement of the rear differential due to the axial and radial torque forces generated by the drivetrain. This unwanted flex and movement leads to the premature failure of the 14mm mounting bolt causing catastrophic damage to the differential, driveshaft, rear axle parts and exhaust system. Installing this billet aluminum bushing permanently eliminates the possibility of any movement of the rear differential and is inexpensive insurance against the catastrophic failure of the driveline area.
During our lengthy R&D and testing process, we used 3 test vehicles with varying stages of tuning and use, one was a mildly modified daily driver, another was a moderately modified 10 sec. 1/4 mile daily driver and the third vehicle is the record holding X3M with a built motor and built transmission. In all 3 test vehicles, our solid bushing proved itself through each punishing launch and 1/4 mile drag race. In each case, the OEM rear differential bolt survived with negligible stress markings. As a complete solution, we are including a Belmetric M14 bolt w/matching washers and lock nut to work with our billet aluminum bushing.
This solid bushing will not add noise, vibration or harmonics because our proprietary design incorporates special materials that have been proven over the years to work in this particular application and use.
Placing your order using this special hyperlink on our webstore will reserve 1 diff bushing w/ hardware included in your name. Once the final production units are ready to ship, we will send an email notification with the tracking number. If you require additional units, please select the appropriate quantity. Estimated ship date will be end of October 2023 or sooner.
We can ship out internationally. If you are located outside of the United States, please send us an email with your shipping address and we will respond with a shipping quote.