SPL Parts adjustable rear upper arms (RUA) for the 2021+ BMW G80 M3, G82/G83 M4 and G87 M2, a complete rear upper camber/lateral and upper traction link kit that replaces the factory wishbone and guide links. The factory setup runs an aggressive camber curve through bump travel that causes premature inside-edge tire wear and reduced traction; these arms provide a wide adjustment range for precise rear camber, eliminating bushing deflection with Teflon-lined rod ends. Designed and built in the USA.
| Type | Rear upper camber/lateral + traction links |
| Position | Rear |
| Material | 6061-T6 aluminum (billet + gun-drilled) |
| Adjustment | Camber (double adjuster) |
| Quantity | Set |
| Part Number | SPL RUA G8X |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2023,2025-2026 | BMW | M3 | Base |
| 2021-2023,2025-2026 | BMW | M3 | Competition |
| 2022-2023,2025-2026 | BMW | M3 | Competition xDrive |
| 2021-2026 | BMW | M4 | Base |
| 2025 | BMW | M4 | CS |
| 2023 | BMW | M4 | CSL |
| 2021-2026 | BMW | M4 | Competition |
| 2022-2026 | BMW | M4 | Competition xDrive |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
