Perrin Red Rear Strut Tower Bar 2015-2021 WRX / 2015-2021 STI | Carbon Fiber Hollow Bar | Chassis Brace
Overview
The Perrin Red Rear Strut Tower Bar is a precision-engineered chassis brace designed specifically for the 2015-2021 Subaru WRX and WRX STI models. This rear shock tower brace significantly enhances chassis rigidity by connecting the two rear strut towers, reducing flex during aggressive driving. It is ideal for Subaru enthusiasts looking to improve handling balance, steering precision, and overall vehicle stability without compromising weight.
Crafted with a focus on lightweight strength and durability, the brace features a 100% carbon fiber hollow bar combined with CNC machined aluminum mounting feet finished in black anodized coating. Perrin’s use of diagonal woven carbon fiber fabric ensures superior stiffness compared to traditional aluminum tubing, while maintaining a sleek, OEM+ appearance. The design philosophy centers on transferring loads between shock towers to minimize chassis deformation under cornering forces.
For Subaru owners, this rear strut tower bar delivers tangible improvements in handling dynamics by reducing understeer and enhancing steering feedback under high load conditions. Additionally, it helps mitigate tire wear and metal fatigue in the shock tower area, contributing to long-term durability. The Perrin rear brace is a functional upgrade that complements the performance-oriented nature of the WRX and STI platforms.
Features & Specifications
This Perrin Rear Strut Tower Bar is engineered for 2015-2021 Subaru WRX and WRX STI models and features a 100% carbon fiber hollow bar with CNC machined aluminum feet. Constructed from lightweight carbon fiber and anodized aluminum, it delivers enhanced chassis rigidity and steering precision for Subaru enthusiasts seeking improved handling and durability.
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Brand: Perrin Performance
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Product: Red Rear Strut Tower Bar
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Part Number: PSP-SUS-041RD
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Fitment: 2015-2021 Subaru WRX / 2015-2021 Subaru WRX STI
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Material: 100% Carbon Fiber (bar), Aluminum (mounting feet)
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Finish: Black anodized aluminum feet, red carbon fiber weave
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Construction: CNC machined aluminum feet, carbon fiber hollow bar
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Origin: Not specified
Key Benefits
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Performance: Reduces rear chassis flex to improve cornering stability and steering precision.
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Durability: Minimizes metal fatigue in shock tower areas, extending chassis life.
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Weight Savings: Carbon fiber construction offers superior stiffness-to-weight ratio over aluminum alternatives.
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Fitment: Designed specifically for VA chassis WRX and STI models ensuring perfect bolt-on installation.
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Quality: CNC machined aluminum feet with anodized finish provide corrosion resistance and a refined look.
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Aesthetics: The red carbon fiber weave adds a subtle yet aggressive visual accent to the rear strut towers.
What's Included
- 1× Perrin Red Rear Strut Tower Bar
- 1× Mounting Foot, Left
- 1× Mounting Foot, Right
- All necessary mounting hardware
- Installation instructions
Installation & Compatibility
Installation of the Perrin Rear Strut Tower Bar is straightforward for enthusiasts with basic mechanical skills and common hand tools. The brace bolts directly to the existing rear shock tower mounting points with included hardware, requiring no drilling or permanent modifications. Professional installation is recommended if unfamiliar with suspension components or torque specifications. No tuning is required as this is a chassis brace designed to improve structural rigidity and handling response.
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Professional Installation: Recommended for best results
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific 2015-2021 WRX or WRX STI model
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