SPL Parts Rear Upper Camber Arms – 2023+ Toyota GR Corolla

The SPL Parts Rear Upper Camber Arms for the Toyota GR Corolla are designed to sharpen rear suspension response, eliminate bushing deflection, and provide a more predictable feel at the limit. For lowered cars, track builds, or anyone dialing in alignment more seriously, these arms provide a large camber adjustment range to help optimize tire wear, grip, braking stability, and handling balance.

Unlike factory rubber-bushed arms, SPL rear upper camber arms use high-quality spherical bearings and a motorsport-focused double adjuster design. The outboard, clamp-style adjuster is easier to reach on the car and does not use traditional jam nuts, making camber changes cleaner, faster, and more repeatable.

Key Features

• Large Camber Adjustment Range: Allows precise rear camber setup for street, track, and lowered applications.
• Eliminates Bushing Deflection: Improves rear suspension response and consistency under load.
• Sharper On-Limit Feel: Helps the rear of the car feel more predictable during aggressive cornering.
• On-Car Adjustment: Outboard double adjuster is easier to access near the knuckle.
• No Jam Nuts: Clamp-style adjuster design helps prevent wandering alignment specs during adjustment.
• Advanced Setup Potential: Can be used with adjustable lower arms to make small kinematic changes and fine-tune bump geometry.
• PTFE-Lined FK Bearings: Self-cleaning, US-made spherical bearings for precision and durability.
• Daily to Race Use: Suitable for everything from street-driven GR Corollas to dedicated track cars.

Why We Like It

Rear camber control is a big deal on a performance car like the GR Corolla, especially once the car is lowered or pushed harder on track. These SPL rear upper camber arms make alignment setup easier, more accurate, and more repeatable. The no-jam-nut double adjuster is a major plus for anyone who actually changes alignment settings or wants a cleaner install experience.

Benefits

• Large rear camber adjustability range
• Eliminates factory bushing deflection
• Improves rear suspension response
• Improves predictability at the limit
• Easier on-car adjustment
• No jam nuts required
• Self-cleaning, US-made, PTFE-lined FK bearings

Materials & Construction

• Arm & Clevis: 6061-T6 aluminum, anodized black
• Spacers & 360° Clamp: 6061-T6 aluminum
• Double Adjuster: 4130 chromoly steel, electroless nickel plated
• Hardware: Ti-6Al-4V titanium 1/4-20 socket head Allen screws, anodized blue
• Bearings: FK PTFE-lined spherical bearings

Easy, On-Car Adjustments

The double adjuster is mounted outboard near the knuckle for improved accessibility. To adjust camber, simply loosen the 1/4-20 titanium hardware, turn the adjuster to reach the desired camber setting, then tighten the titanium hardware to lock it in place. This design helps reduce the frustration of holding one end while tightening another and helps keep alignment settings from wandering during adjustment.

Replaces OEM Part Numbers

• 48790-52020
• 48770-52010

Specifications

• Brand: SPL Parts
• Product: Rear Upper Camber Arms
• Position: Rear upper suspension
• Adjustment: Rear camber
• Quantity: Pair, one pair per vehicle
• Application: Toyota GR Corolla

Installation Notes

• Professional installation and alignment are recommended.
• A full alignment should be performed after installation.
• Final suspension hardware torque should be completed at ride height whenever applicable.
• For advanced suspension setup, these can be paired with SPL adjustable lower arms for additional kinematic tuning.
• Refer to SPL’s GR Corolla Rear Upper Camber Arms installation instructions before installation.

What’s in the Box

• (1) Pair of SPL Parts Rear Upper Camber Arms
• Included SPL hardware/components per kit contents

Compatibility & Disclaimers

Designed for 2023+ Toyota GR Corolla applications. Sold as one pair per vehicle. Alignment settings, tire wear, handling balance, and suspension behavior may vary depending on ride height, tire setup, supporting suspension components, and intended use. OEM part number references are provided for general compatibility guidance only, as manufacturers may revise part numbers over time.