SPL Parts Rear Upper Arms - BMW M2/M3/M4 (G87/G80/G82/G83)

OVERVIEW

BMW G8X 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, very apparent on lowered cars — excess negative camber causes premature inside-edge tire wear and reduced acceleration traction, while too little camber limits rear cornering grip. SPL's Rear Upper Arms provide a wide adjustment range for precise rear camber alignment while eliminating bushing deflection with smooth, articulating Teflon-lined rod ends in place of the soft factory rubber bushings.

SPECS

• Black anodized, gun-drilled 2024 aluminum traction links to reduce weight
• 6061-T6 billet aluminum curved rear upper camber arm with included double adjuster
• Exclusive 360° 6061-T6 aluminum rotating-clamp design for quick, precise dogbone adjustment without removing the arm from the vehicle
• Titanium socket-head cap screws and tapered stainless steel knuckle-mount spacers
• Low-friction 3-piece Teflon-lined FK rod ends, made in Connecticut, rated -65°F to 325°F
• Made in the USA

PARTS INCLUDED

• Complete kit for one car — 4 total arms (rear upper camber arms + traction links)
• Double adjusters, knuckle-mount spacers, and titanium hardware

TECH RESOURCES

• A professional wheel alignment is required after installation to set rear camber
• Installation instructions (PDF): SPL RUA G8X Install Guide

PART NUMBER

• SPL RUA G8X

VEHICLE APPLICATIONS