Want to tighten up the diff on your 2021+ G8X M3/M4, A9X Supra, G42 2 Series, or G2X BMW and help eliminate any extra diff movement on hard launches? We got you covered with our Rear Billet diff insert kit. This is pressed into the factory bushing and fills the voids in the bushing. This keeps the stock bushing ride compliance but removes any unwanted movement. These are sold as a kit. To install remove the rear diff bushing, use the stock bolt in press the bushing in, and then replace it with the new bolt washer, and lock nut!
Kit includes:
- One Billet Bushing insert
- Two 46mm Hardened Steel Washers
- One 12.9 M14 Bolt
- One M14 Lock nut
THIS KIT MAY REQUIRE LOWERING OF THE SUBFRAME TO GET THE STOCK BOLT OUT, AND THE NEW ONE IN
All products that are designed to stiffen or reduce drivetrain movement inherently have the tendency to increase NVH or Noise, Harness, or vibration. While these bushings inserts have been found to add little NVH in most instances. Your results and sensitivity to NVH may vary. This product is designed to reduce drivetrain movement, and that was the goal when designing and manufacturing this product. Returns for NVH are not accepted once products are installed.
Denzil Fernandes (verified owner) –
Without the whole bushing … it was a whole lotta bashing going on between the driveshaft and the factory bolt… Sure i shaved most of it… but having put all these bushings in … she’s holding nice and firm. I’d recommend to even do the transfer case bushing if xDrive