PCI Front Lower Arm Gusset Plates

PCI Front Lower Arm Gusset Plates - Toyota GR86 / Subaru BRZ (2013+)

Eliminate Control Arm Flex & Maintain Precision Alignment

Reinforce your chassis for the track with the PCI Front Lower Arm Gusset Plates. While the factory front lower control arms (FLCAs) are suitable for street tires and daily driving, they are a known weak point in racing applications. Under heavy braking and high-speed cornering, the thin-gauge factory steel can flex, leading to "dynamic alignment" changes that result in inconsistent handling and reduced front-end grip. These PCI gussets are precision-cut from .090 mild steel and designed to be welded directly onto the OEM arms, creating a boxed structure that significantly increases rigidity without the extreme cost of full aftermarket control arms.

What’s Included in the Box:

- Full Gusset Plate Set: Precision-cut plates for both Left and Right front lower control arms.

- Alignment Notches: Integrated notches for easy positioning and heat management during welding.

The PCI Advantage

- Race-Proven Rigidity: By boxing in the open sections of the factory control arms, these plates virtually eliminate lateral and vertical flex, ensuring your camber and caster settings remain stable under load.

- Advanced "Warp-Free" Design: The plates feature specialized indication notches. These allow for strong stitch-welding while minimizing the amount of heat soak into the arm, preventing the factory metal from warping during the installation process.

- Heavy-Duty Construction: Manufactured from .090-inch thick high-quality mild steel, providing the perfect balance between massive strength increases and minimal weight gain.

- Cost-Effective Performance: Provides similar rigidity benefits to high-end billet control arms at a fraction of the price, making them the preferred choice for Spec-series racers and weekend track warriors.

- Improved Steering Feedback: With the arm no longer flexing, the driver receives a more direct and un-muffled signal through the steering rack, allowing for better "at the limit" car control.

Product Specifications

- Part Number: CA-GR86-FL-G

- Material: .090 Mild Steel

- Finish: Raw (Requires painting or coating after welding)

- Installation: Weld-In (Professional welding recommended)

- Country of Origin: USA

Vehicle Compatibility

- Toyota GR86 (2022, 2023, 2024, 2025, 2026+)

- Subaru BRZ (2022, 2023, 2024, 2025, 2026+)

- Toyota 86 / Scion FR-S (2013-2021)

- Subaru BRZ (2013-2021)

Precision Tip: These plates arrive in a raw steel finish and must be welded to your factory arms. After welding is complete and the arms have cooled, we highly recommend using "Steel-It" polyurethane coating or a high-quality powder coat to prevent oxidation. This is also the perfect time to replace your squishy factory rubber bushings with PCI Spherical Bearings or Whiteline Synthetic Elastomer Bushings for the ultimate front-end setup.