SPL Parts Rear Lower Lateral Arms - 2023+ GR Corolla

The SPL Parts Rear Lower Lateral Arms for the Toyota GR Corolla are designed to increase rear lateral stiffness, reduce camber change caused by bushing deflection, and sharpen rear-end feedback as you turn into a corner. For a short-wheelbase, performance-focused chassis like the GR Corolla, improving rear suspension precision can make a major difference in confidence, tire wear, and on-limit feel.

These arms are built with SPL’s motorsport-focused materials and bearing setup, including hollow 6061-T6 aluminum arms, FK PTFE-lined bearings, titanium hardware, and chromoly steel clevis studs. They can be used on their own or paired with SPL Rear Upper Arms for additional rear camber adjustability and camber gain tuning.

Key Features

• Improves Rear Lateral Stiffness: Helps reduce vague rear-end feedback and improve response during corner entry.
• Reduces Camber Change: Minimizes camber loss caused by factory bushing deflection.
• Sharper Handling Feel: Improves steering feel, chassis feedback, and on-limit control.
• Can Help Reduce Rear Tire Wear: More consistent alignment behavior can help manage tire contact and wear.
• Camber Gain Tuning Potential: Allows camber gain curve adjustment when paired with SPL Rear Upper Arms.
• Lightweight Construction: Approximately 2.26 lbs per side.
• Maintenance-Free Bearings: Uses US-made, PTFE-lined FK bearings for durability and precision.
• Sold as a Pair: Includes one left and one right rear lower lateral arm.

Why We Like It

The GR Corolla already has the power and grip to be a serious backroad, track day, and time attack car, but the rear suspension can benefit from more precision. These SPL rear lower lateral arms help remove compliance from the system, giving the car a more direct and predictable feel. They are especially worth considering if you are already dialing in alignment, running stickier tires, or pairing them with SPL rear upper arms.

Materials & Construction

• Arm Construction: 6061-T6 hollow aluminum arm
• Clamps & Spacers: 6061-T6 aluminum
• Clevis Stud: 4140 chromoly steel
• Clevis: 6061-T6 billet aluminum
• Hardware: Ti-6Al-4V titanium hardware, anodized blue
• Bearings: Maintenance-free, US-made, PTFE-lined FK bearings

NVH Notes

According to SPL, the rear lower lateral arms are not a significant contributor to added noise, vibration, or harshness, even when paired with SPL Rear Upper Arms.

Replaces OEM Part Number

• Toyota 48710-52090

Specifications

• Brand: SPL Parts
• Product: Rear Lower Lateral Arms
• Position: Rear suspension
• Quantity: Pair, one pair per vehicle
• Weight: Approximately 2.26 lbs per side
• Application: Toyota GR Corolla

Installation Notes

• Professional installation and alignment are recommended.
• Final suspension hardware torque should be completed at ride height whenever applicable.
• A full alignment should be performed after installation.
• For additional rear camber adjustment and camber gain tuning, pair with SPL Rear Upper Arms.
• Refer to SPL’s GR Corolla Rear Lower Lateral Arms installation instructions before installation.

What’s in the Box

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

Compatibility & Disclaimers

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