PERRIN PSP-SUS-041RD Rear Shock Tower Brace for 2015-21 Subaru WRX/STI

Vehicle Fitment

• 2015-2021 Subaru WRX (2.0 L Turbo, AWD)
• 2015-2021 Subaru WRX STI (2.5 L Turbo, AWD)
• 2022-2025 Subaru WRX (2.4 L Turbo, AWD) - coverage for 2022-25 unconfirmed, purchase only if confirmed for your trim.

Features

• Rear shock/strut tower brace that ties left and right rear shock towers together for improved chassis rigidity.
• CNC-machined aluminium mounting feet provide accurate fitment and minimal flex.
• Main bar constructed from lightweight aluminium tubing with high-strength finish for durability and performance.
• Powder-coated Red finish (RD) for standout appearance and corrosion resistance.
• Direct-bolt-in design for the rear shock towers - no major modifications required.
• Improves handling precision, reduces chassis flex under cornering or heavy load usage.
• Ideal for aggressive street, track, or performance-tuned applications where rear chassis flex may hamper suspension geometry.
• Includes complete mounting hardware - bolts, washers, and locknuts.

Specifications

• Mounting feet material: CNC-machined aluminium, anodised black.
• Main bar material: Lightweight aluminium tubing, powder-coated Red (RD variant).
• Application: Rear shock/strut towers only, not front towers.
• Approximate weight: ~1.90 lbs.
• Finish: Red powder coat on bar, black anodised on feet.
• Warranty: 5-year manufacturer warranty.

Included Components

• 1x Rear Shock Tower Brace (Red - RD variant)
• 2x Mounting Feet (Left & Right, aluminium)
• Installation hardware: bolts, washers, locknuts

Product Description

The PERRIN PSP-SUS-041RD Rear Shock Tower Brace is designed for 2015-21 WRX and WRX STI models (and listed for 2022-25 WRX) to enhance rear chassis rigidity. By connecting the left and right rear shock towers, this brace reduces flex under high-load cornering or performance driving, improving suspension geometry response, handling precision, and driver confidence.

Installation is straightforward: remove the factory rear brace if equipped and install the PERRIN unit using the supplied mounting feet and hardware. The CNC-machined feet ensure accurate fitment, and the bold Red finish adds both performance and visual appeal. This upgrade is ideal for track-oriented enthusiasts or those seeking tighter rear-end handling without major modifications.