SPL Parts Adjustable Rear Upper Arms (RUA) — BMW F8X

An absolute necessity to maintain proper rear camber and reduce tire wear on street and track. The stock BMW setup has an aggressive camber curve through bump travel, very apparent on lowered cars — excess negative camber causes premature inside-edge tire wear and reduces acceleration traction, while too little camber limits cornering grip.

Provides a wide adjustment range for precise camber tuning to match your ride height and use case.

Fits BMW F80 M3 and F82 M4.