Take your vehicle's handling to the next level with PERRIN Performance sway bars. Upgrading your sway bar is the easiest way to improve vehicle handling. Sway bars increase roll resistance and modify vehicle balance. In general, adding a larger rear sway bar increases over steer, and adding a larger front sway bar increases under steer. Upgrade both front and rear sway bars to reduce body roll and tune vehicle balance to your preference.

PERRIN Performance Rear Sway Bars are adjustable with three end link mounting holes, this allows adjustment to the stiffness of the bar. 

Finished in a glossy red powder-coated finish for long-lasting good looks.

2008 WRX: 

• PERRIN 22mm Bar Hole #1 550% Stiffer than 15mm OEM bar
• PERRIN 22mm Bar Hole #2 720% Stiffer than 15mm OEM bar
• PERRIN 22mm Bar Hole #3 900% Stiffer than 15mm OEM bar 

2009-2014 WRX: 

• PERRIN 22mm Bar Hole #1 400% Stiffer than 16mm OEM bar
• PERRIN 22mm Bar Hole #2 530% Stiffer than 16mm OEM bar
• PERRIN 22mm Bar Hole #3 720% Stiffer than 16mm OEM bar 

2015-2017 WRX / STI:

• PERRIN 22mm Bar Hole #1 105% Stiffer than 20mm OEM bar
• PERRIN 22mm Bar Hole #2 160% Stiffer than 20mm OEM bar
• PERRIN 22mm Bar Hole #3 240% Stiffer than 20mm OEM bar

2018-2021 WRX / STI:

• PERRIN 22mm Bar Hole #1 150% Stiffer than 19mm OEM bar
• PERRIN 22mm Bar Hole #2 210% Stiffer than 19mm OEM bar
• PERRIN 22mm Bar Hole #3 300% Stiffer than 19mm OEM bar