Perrin Equal Length Header WRX (2015-2018) Wheels Your Wagon will approve

Your Wagon will approve

In effect caster is the angle on which the steering knuckle rotates

Round threads for easy adjustment

- Improved throttle response and acceleration

rich exhaust note

Perrin Equal Length Header WRX (2015-2018) Wheels Your Wagon will approveIncrease power and torque through quicker turbo response and a more efficient collector design with the PERRIN Equal Length Header for the 2015 2017 WRX. Instantly increase turbo response and add 15 20 wheel horsepower and 20 ft lbs of torque with the PERRIN Equal Length Headers. This part is perfectly safe to install and does not required an ECU tune. Dyno graph shows results of a 2015 WRX with typical bolt ons (3 inch turbo back exhaust and no ECU