Perrin Carbon Fiber Rear Strut Tower Bar 2015-2021 WRX / 2015-2021 STI | Carbon Fiber Construction | Chassis Brace
Overview
The Perrin Carbon Fiber Rear Strut Tower Bar is designed to enhance chassis rigidity and improve steering precision for the 2015-2021 Subaru WRX and WRX STI models. By connecting the rear shock towers, this brace effectively eliminates flex during cornering and high-load driving conditions, providing a more responsive and stable driving experience. It is an ideal upgrade for enthusiasts seeking to sharpen handling without compromising weight or aesthetics.
Engineered with a focus on strength and lightweight performance, the brace features a 100% carbon fiber hollow bar combined with CNC machined aluminum mounting feet finished in black anodized coating. This construction approach ensures superior stiffness compared to traditional aluminum tubing while maintaining a sleek, OEM+ appearance. The diagonal woven carbon fiber fabric used in the bar offers exceptional durability and rigidity, making it a standout component in Perrin’s lineup of chassis reinforcement products.
For Subaru owners, this rear strut tower bar reduces understeer and tire wear by transferring loads between the shock towers during cornering. It also helps mitigate metal fatigue in the shock tower area, extending the longevity of the chassis. The combination of performance benefits and refined styling makes this brace a practical and visually appealing addition to any VA WRX or STI.
Features & Specifications
This Perrin Carbon Fiber Rear Strut Tower Bar is engineered specifically 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 improved steering precision for Subaru enthusiasts seeking better handling and durability.
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Brand: Perrin Performance
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Product: Carbon Fiber Rear Strut Tower Bar
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Part Number: PSP-SUS-041CF
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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), Natural 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 chassis flex and understeer for sharper cornering response
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Durability: Carbon fiber construction resists metal fatigue in shock tower areas
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Fitment: Designed specifically for VA WRX and STI rear shock towers for precise installation
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Quality: CNC machined aluminum feet with anodized finish ensure long-lasting corrosion resistance
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Weight Savings: Lighter than traditional aluminum bars, minimizing added mass
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Aesthetics: Visible carbon fiber weave adds a subtle performance-inspired accent to the rear strut tower area
What's Included
- 1× Perrin Carbon Fiber 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 those with basic mechanical skills and common hand tools. The brace bolts directly to the existing rear shock tower mounting points without requiring modifications. Professional installation is recommended if you are unfamiliar with suspension components or torque specifications. No tuning is required, but proper torque and alignment checks after installation are advised to ensure optimal performance and safety.
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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 2015-2021 Subaru WRX and WRX STI models
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