CUSCO Adjustable Rear Upper Control Arm – 2013-2022+ Scion FR-S / Subaru BRZ / Toyota GT86 & GR86

The CUSCO Adjustable Rear Upper Control Arm is built for drivers who need more rear alignment control than the factory setup can offer. Whether you are lowering the car, running wider wheels and tires, or pushing harder at autocross and track days, this arm gives you the adjustment range and rigidity needed to keep the rear suspension working the way it should.

Designed as a direct replacement, this turn-buckle style arm allows precise rear camber correction while reducing the slop found in factory bushings. The result is better tire contact, improved cornering consistency, and a more direct feel from the rear of the car.

Key Features

• Wide Camber Adjustment Range: Turn-buckle adjustment provides +15mm / -15mm of range for precise rear suspension tuning.
• Improved Rear Geometry: Helps correct alignment on lowered cars and supports more aggressive wheel and tire fitments.
• High-Strength Construction: Steel pipe construction designed to handle the loads created by high-grip tires and motorsport use.
• Reduced Bushing Deflection: Hard rubber bushings help preserve alignment under load and improve steering and chassis response.
• Direct Replacement Fitment: Bolt-on replacement for the OEM arm.
• CUSCO Blue Finish: Powder coated in Cusco’s signature blue.

Why We Like It

This is one of the most useful rear suspension upgrades for a lowered 86/BRZ chassis. It gives you the flexibility to properly dial in rear camber for handling, tire wear, and wheel clearance instead of just living with whatever the factory geometry gives you after a drop.

Camber Adjustment Benefits

Additional negative camber can improve tire contact patch and cornering speed, especially on lowered cars and aggressive setups. It also gives you more freedom to fine-tune tire-to-fender clearance when running wider wheels or lower offsets.

• Adjustment Range: +15mm / -15mm (30mm total compared to stock)
• Sample Camber Range at -35mm Ride Height:
• OEM arm rear camber: approximately -2.5°
• CUSCO arm at -15mm: approximately -7.5°

Results vary depending on ride height, lateral links, wheel setup, and final alignment settings.

Specifications

• Component: Adjustable Rear Upper Control Arm
• Adjustment Style: Turn-buckle
• Adjustment Range: +15mm / -15mm
• Construction: High-strength steel pipe
• Bushing / Joint Type: Knuckle ball joint and hard rubber insert bushings
• Finish: Powder coated CUSCO blue
• Sold As: Pair

Installation Notes

• Direct bolt-on installation.
• Professional install time is approximately 1 hour.
• Wheel alignment is required after installation.
• Recommended for lowered vehicles, motorsport use, and cars running wider track or more aggressive wheel fitment.

What’s in the Box

• (1) Pair of CUSCO Adjustable Rear Upper Control Arms
• Included hardware (per CUSCO kit contents)

Compatibility & Disclaimers

Designed for the vehicles listed above. Alignment results will vary depending on ride height, wheel and tire setup, and other suspension components. Professional installation and alignment are strongly recommended to ensure proper fitment, tire clearance, and handling performance.