Perrin PSP-SUS-041CF Carbon Fiber Rear Brace for 2015-2021 Subaru WRX/STI

Vehicle Fitment

• 2015-2021 Subaru WRX / STI (all trims, 2.0L Turbo, AWD)

Features

• Lightweight carbon fiber bar for high-strength chassis support
• CNC-machined billet aluminum mounting feet
• Stiffens rear shock towers to reduce flex under load
• Improves handling precision and reduces understeer
• Through-tower tension/compression design transfers loads efficiently
• Factory mounting - no drilling or modifications required
• 5-year manufacturer warranty backed by Perrin Performance
• Clearance-safe design for OEM and aftermarket sway bars

Specifications

• Placement: Rear (ties left/right shock towers)
• Bar material: High-strength carbon fiber composite
• Feet material: CNC billet aluminum, black anodized
• Finish: Gloss clear coat carbon fiber
• Weight: approx 1.5 kg (3.3 lbs)
• Compatible with OEM and Perrin rear sway bars

Included Components

• 1x Rear shock tower bar (carbon fiber)
• 2x Billet aluminum mounting feet
• Mounting hardware (bolts, washers, nuts)
• 1x Installation instructions

Product Description

The Perrin PSP-SUS-041CF Carbon Fiber Rear Shock Tower Brace is engineered for the 2015-2021 Subaru WRX and STI, strengthening the rear chassis to deliver sharper handling and increased rear-end stability. Crafted from lightweight carbon fiber with durable billet aluminum feet, it significantly reduces flex in the shock towers during cornering, promoting balanced handling and reducing understeer.

Installation is straightforward with OEM mounting points - no drilling needed. Designed to work with factory and Perrin sway bar setups while maintaining full clearance. With a sleek carbon fiber finish and backed by Perrin's 5-year warranty, this brace is ideal for track-focused drivers seeking both performance and style in their WRX/STI.