Perrin Performance Rear Sway Bar
2008–2021 Subaru WRX / STI, 2013–2025 Subaru BRZ, 2013–2016 Scion FR-S, 2017–2021 Toyota 86, 2022–2025 Toyota GR86
PSP-SUS-245
Overview:
Enhance your vehicle's handling precision and cornering stability with the Perrin Performance Rear Sway Bar. Designed for Subaru WRX, STI, BRZ, Scion FR-S, Toyota 86, and GR86 models spanning 2008 through 2025, this adjustable sway bar is an essential upgrade for enthusiasts seeking improved roll resistance and balanced vehicle dynamics. Whether you drive daily or push your car on spirited drives or track days, this rear sway bar helps reduce body roll and allows you to fine-tune oversteer characteristics to your preference.
Upgrading your sway bars is one of the most effective ways to sharpen handling without compromising ride quality. The Perrin Rear Sway Bar complements front sway bar upgrades to deliver a well-balanced chassis response tailored to your driving style.
Key Features:
The Perrin Rear Sway Bar offers precise adjustability and durable construction to elevate your vehicle’s handling performance:
- Adjustable stiffness with three end link mounting holes, allowing you to dial in the perfect balance between comfort and performance.
- Glossy red powder-coated finish provides long-lasting corrosion resistance and a striking appearance under the vehicle.
- Multiple diameter options tailored to specific model years and platforms, ensuring optimal fitment and performance gains.
- Increases rear roll resistance to promote controlled oversteer, enhancing cornering agility and driver confidence.
- Constructed from high-quality steel for strength and durability under demanding driving conditions.
- Designed to work seamlessly with OEM mounting points for straightforward installation.
- Compatible with a wide range of Subaru and Toyota performance models, including WRX, STI, BRZ, FR-S, 86, and GR86.
Construction & Design:
The Perrin Rear Sway Bar is engineered from robust steel and finished with a durable red powder coat to resist corrosion and wear. Its adjustable design features three distinct end link mounting positions, enabling you to customize the bar’s effective stiffness. This flexibility lets you fine-tune your vehicle’s handling balance, increasing rear roll stiffness to reduce body roll and enhance cornering response. The bar’s precise fitment ensures it mounts directly to factory locations without modification, preserving factory geometry and ease of installation.
Installation & Fitment:
This sway bar is a direct bolt-on upgrade for the following vehicles:
- 2008–2021 Subaru WRX and STI
- 2013–2025 Subaru BRZ
- 2013–2016 Scion FR-S
- 2017–2021 Toyota 86
- 2022–2025 Toyota GR86
No cutting, drilling, or special tuning is required for installation. The sway bar uses existing mounting points and hardware, making it a straightforward upgrade for enthusiasts looking to improve handling without extensive modifications.
What's Included:
- Adjustable rear sway bar with three end link mounting positions
- All necessary mounting hardware for direct installation
- Detailed installation instructions for applicable models
Performance Specifications by Model
- 2008 WRX (16mm bar): Hole #1: 9% less stiff than OEM 15mm; Hole #2: 25% stiffer; Hole #3: 60% stiffer
- 2009–2014 WRX/STI (22mm bar): Hole #1: 5% less stiff than OEM 16mm; Hole #2: same stiffness as OEM 16mm; Hole #3: 5% stiffer
- 2013–2016 BRZ/FR-S (22mm bar): Hole #1: 30% stiffer than OEM 14mm; Hole #2: 65% stiffer; Hole #3: 116% stiffer
- 2017–2021 BRZ/86 (22mm bar): Hole #1: 9% less stiff than OEM 15mm; Hole #2: 25% stiffer; Hole #3: 60% stiffer
- 2022–2023 BRZ/GR86 (22mm bar): Hole #1: 30% stiffer than OEM 14mm; Hole #2: 65% stiffer; Hole #3: 116% stiffer
