SPL Parts solid differential mounting bushings for the 2020+ Toyota GR Supra (A90) and 2019+ BMW Z4 (G29), 2-Series, 3-Series and 4-Series (G2X/G42). They replace the soft stock bushings — known to tear under hard track use — to lock the differential to the subframe, eliminating diff bounce under launches, reducing wheel hop and protecting the driveshaft and half shafts. CNC machined from 6061-T6 billet aluminum, complete front + subframe kit. Made in the USA.
| Type | Solid differential mount bushings (kit) |
| Material | 6061-T6 billet aluminum |
| Benefit | No diff bounce; less wheel hop |
| Included | Front + subframe bushings |
| Origin | Made in the USA |
| Platform | Toyota GR Supra A90, BMW G2X/G42/Z4 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2026 | Toyota | GR Supra | Base |
| 2020-2026 | Toyota | GR Supra | Premium |
| 2019-2026 | BMW | Z4 | sDrive30i |
| 2022-2026 | BMW | Z4 | M40i |
| 2019-2025 | BMW | 330i | Base |
| 2020-2025 | BMW | M340i | Base |
| 2021-2026 | BMW | M440i | Base |
| 2023-2025 | BMW | M240i | Base |
