Description

Bring enhanced agility and a more planted feel to the rear of your WRX S4 with the STI Flexible Draw Stiffener for the rear chassis. It is mounted between the left and right rear frame rails. This fine-tunes the vehicle’s dynamics for a more cohesive and responsive driving experience.

Product Highlights

• Integrated Rear Chassis Control: Installed between the left and right rear side frames (inside the rear bumper), this stiffener pre-tensions a key structural area of the rear chassis. This reduces flex, helping the rear of the vehicle respond more seamlessly and predictably to driver inputs and changes in direction.

• Improved Agility & Ride Compliance: The design philosophy promotes agile, sporty movement by sharpening the car’s willingness to rotate and change direction, while its flexible nature aims to preserve a smooth ride by not introducing undue harshness from the rear suspension.

• Enhanced Overall Balance: By controlling flex in the rear subframe area, it works in concert with the front stiffener and other chassis braces to create a more balanced, neutral, and communicative handling character, making the car feel more cohesive as a whole.

Technical Specifications & Warranty Note

• Product Name: STI Flexible Draw Stiffener (Rear) for Subaru WRX S4

• Key Benefits: Enhanced Rear-End Responsiveness, Improved Overall Chassis Balance, Maintained Ride Quality

• Installation Point: Between the left and right rear side frames (inside rear bumper area).

• Warranty: Covered by a dedicated STI warranty (1 year / 20,000km), not the standard Subaru new vehicle warranty.