SPL Parts Adjustable Rear Upper Control Arms - Toyota GR Corolla - SPL RUA E210

The SPL Parts Adjustable Rear Upper Control Arms (Part #SPL RUA E210) are designed to dramatically improve rear suspension precision on the Toyota GR Corolla. By eliminating factory rubber bushing deflection and offering a massive camber adjustment range, these rear upper arms deliver sharper response, predictable handling at the limit, and improved tire wear for both street and track-driven vehicles.

With an outboard-mounted, clamp-style double adjuster, camber changes can be made quickly and accurately while the arms remain installed on the car. This design removes the need for jam nuts and prevents alignment drift under hard driving.

• Brand: SPL Parts
• Part Number: SPL RUA E210
• Position: Rear Upper
• Component Type: Adjustable rear upper control arms (camber arms)
• Adjustment Range: Large camber adjustment range, ideal for lowered vehicles
• Adjustment Method: Outboard-mounted double adjuster for easy, on-car tuning
• Bearings: US-made FK PTFE-lined spherical bearings (self-cleaning)
• Use Case: Street, track, and race applications
• Sold As: Pair

Performance Benefits

• Eliminates OEM bushing deflection for precise alignment control
• Improves rear suspension response and stability
• Allows fine camber tuning for improved grip, braking, and tire life
• Enables advanced kinematic tuning when paired with adjustable lower arms
• Prevents alignment drift with clamp-style, jam nut-free design

Construction & Materials

• 6061-T6 aluminum clevis and arm, anodized black
• 6061-T6 aluminum spacers and 360-degree clamp
• 4130 chromoly steel double adjuster, electroless nickel plated
• Ti-6Al-4V titanium 1/4-20 socket head Allen screws, anodized blue
• FK PTFE-lined spherical bearings for smooth, low-friction operation

The outboard-mounted double adjuster is positioned near the knuckle for improved accessibility. Simply loosen the titanium hardware, rotate the adjuster to set camber, then retighten to lock the setting in place - no jam nuts and no wandering alignment specs.

Vehicle Fitment

• Toyota GR Corolla (2023+)

Replaces OEM Part Numbers: 48790-52020 , 48770-52010