Perrin Rear Sway Bar 25mm Adjustable Sway Bar 2008-2021 WRX / 2008-2021 STI / 2013-2017 Crosstrek / 2009-2015 Forester / 2010-2014 Legacy | Adjustable Stiffness | Rear Suspension Upgrade
Overview
The Perrin Rear Sway Bar is a precision-engineered suspension upgrade designed to enhance the handling dynamics of multiple Subaru platforms including the 2008-2021 WRX, 2008-2021 WRX STI, 2013-2017 Crosstrek, 2009-2015 Forester, and 2010-2014 Legacy. This adjustable 25mm rear sway bar increases roll resistance, reduces body roll, and allows drivers to fine-tune vehicle balance to their preference. It is ideal for enthusiasts seeking sharper cornering response and improved chassis control without compromising daily drivability.
Perrin Performance approaches sway bar design with a focus on durability, adjustability, and fitment precision. Their rear sway bars feature three end link mounting holes, enabling three levels of stiffness adjustment. This flexibility allows Subaru owners to dial in the ideal balance between oversteer and understeer based on driving style and conditions. The bar is finished in a glossy red powder coat that resists corrosion and maintains a clean, OEM+ appearance.
Upgrading to the Perrin Rear Sway Bar delivers tangible improvements in handling by significantly increasing rear roll stiffness compared to OEM bars. This upgrade is especially beneficial for Subaru owners who want to reduce body roll during aggressive cornering or spirited driving. The adjustable design means you can tailor the handling characteristics to suit street driving, track days, or canyon runs, making it a versatile choice for Subaru enthusiasts.
Features & Specifications
This Perrin Rear Sway Bar is engineered for Subaru WRX, STI, Crosstrek, Forester, and Legacy models spanning 2008 to 2021. Featuring a 25mm diameter and adjustable stiffness via three end link mounting positions, it is constructed from high-strength steel with a durable powder-coated finish, delivering enhanced roll resistance and customizable handling for Subaru drivers seeking improved chassis balance.
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Brand: Perrin Performance
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Product: Rear Sway Bar 25mm Adjustable Sway Bar
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Part Number: PSP-SUS-248
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Fitment: 2008-2021 WRX / 2008-2021 STI / 2013-2017 Crosstrek / 2009-2015 Forester / 2010-2014 Legacy
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Material: High-Strength Steel
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Finish: Glossy Red Powder Coat
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Construction: Welded
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Origin: Made in USA
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Adjustability: 3 End Link Mounting Positions
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Diameter: 25mm
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Stiffness Increase Range: 105% to 900% stiffer than OEM depending on model and mounting hole
Key Benefits
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Handling: Significantly reduces body roll for sharper cornering and improved vehicle control
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Adjustability: Three mounting positions allow fine-tuning of rear roll stiffness to suit driving style and conditions
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Fitment: Designed specifically for multiple Subaru platforms ensuring precise OEM-level fit and easy installation
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Durability: Powder-coated steel construction resists corrosion and maintains performance over time
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Balance: Helps tune vehicle balance by increasing rear roll resistance, promoting a more neutral or oversteer-biased handling feel
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OEM+ Quality: Clean finish and robust design complement Subaru’s factory suspension components
What's Included
- 1× Perrin Rear Sway Bar 25mm Adjustable Sway Bar
- Mounting hardware for installation
- Installation instructions
Installation & Compatibility
Installation of the Perrin Rear Sway Bar is moderately straightforward for those with basic mechanical skills and standard hand tools. It is a direct bolt-on upgrade with no modifications required for fitment on the specified Subaru models. Adjusting the sway bar stiffness is as simple as relocating the end link to one of the three mounting holes. While professional installation is not mandatory, it is recommended for those unfamiliar with suspension work to ensure proper torque and alignment. No tuning is required, but alignment after installation is advised to maintain optimal handling characteristics.
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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 year and trim level before purchase
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