BMW F8X adjustable Rear Upper Arms (RUA) are an absolute necessity to maintain proper rear camber and reduce tire wear on the street and track. The stock BMW setup has an aggressive camber curve through bump travel, which is very apparent on lowered cars. Excess negative camber causes premature tire wear on the inside edge, and reduced traction on acceleration while too little camber will limit rear grip while cornering. Our Rear Upper Arms provide a wide adjustment range for precise rear camber alignment that is easily optimized for street or track driving while eliminating bushing deflection with smooth articulating Teflon lined rod ends in place of the soft factory rubber bushings. Our kit replaces the factory links commonly referred to as the rear wishbone and rear guide links. BMW F8X Rear Upper Arms are gun drilled 2024 Aluminum links to reduce weight, then are Black Anodized to prevent corrosion and provide a durable finish. Our 360 degree 6061-T6 Aluminum Rotating Clamp design allows for quick, precise adjustment. Our Clamps tightened down with Blue Anodized Titanium Socket Head Cap Screws gives easy access to adjust camber settings, shaving off even more unsprung weight without compromising strength. Long gone are the days of fumbling with wrenches to tighten jam nuts while trying to trying to keep your bearings oriented correctly. Sold as a complete kit for one car (4 total arms).
Part number: SPL RUA F8X (SPLRUAF8X)
SPL Parts 2014+ BMW M2/M3/M4 (F8X) Rear Upper Control Arms
- Canadian company, prices in CAD
- Shipping and duties shown before you pay, no surprises at the door
- 30 day returns from delivery, see policy
Vehicle fitment
Estimated fitment — verify before purchase| Years | Make | Model |
|---|---|---|
| 2016–2026 | BMW | M2 |
| 2014–2026 | BMW | M3 |
| 2015–2026 | BMW | M4 |
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | SPL Parts |
| Part number | SPPSPL RUA F8X |
| Category | Suspension & Lift |
Customer reviews

Worth adding
Useful in any truck — ships separately in its own box.
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