Perrin Performance

The new PERRIN E4-Series Big-Tube Equal Length Header comes with collectors that have been designed for better exhaust flow while allowing the headers to be constructed much more accurately. The improved exhaust flow and more precise construction increases power and reliability. The new E4-S..

Create a smooth sounding exhaust note while increasing horsepower and torque with the PERRIN E4-Series Equal Length Header.2002-2005 WRX - Yes, requires oil pan with header cutout and oil pickup tube, and custom modification to the radiator line to the transmission.2002-2005 WRX - Automatic Transmi..

Improve turn-in and increase handling proficiency with the PERRIN Positive Steering Response System (PSRS).1993-2001 Impreza - Yes2002-2007 WRX - Yes2004-2007 STI - Yes..

improve a known failure point with a set of high grade PERRIN Endlinks! *Why you need these endlinks* The OEM WRX plastic endlinks are week and will flex greatly after installing a stiffer aftermarket swaybar. This flexing makes your stiffer aftermarket swaybar feel less responsive. PERRIN endl..

Improve airflow, increase horsepower, and add style to your engine bay with the PERRIN Turbo Inlet Hose...

Replacement 2.4" Nylon Coupler for PERRIN Turbo Inlet Hoses.PERRIN 2.4" Turbo Inlet Hoses - YesPERRIN 3.0" Turbo Inlet Hoses - No..

Hose connectors and clamps for installing your PERRIN Turbo Inlet Hose for 2002-2014 WRX or 2004-2019 STI ...

The Rotated Turbo Tuner kit is designed around the customer who already may have a turbo, and or a wastegate,and is looking to install them onto their WRX or STI. As long as you have one of our supported turbos and wastegates, you can get the same level of performance offered in our complete Rot..

The Rotated Turbo Tuner kit is designed around the customer who already may have a turbo, and or a wastegate,and is looking to install them onto their WRX or STI. As long as you have one of our supported turbos and wastegates, you can get the same level of performance offered in our complete..

Direct replacement bushings for PERRIN Front Swaybar kits. Sold as a single bushing; for two bushings, please order two. X-PSP-SUS-102 = 22mm for 2002-2007 WRX & STIX-PSP-SUS-104 =  25mm for 2002-2007 WRX & STI X-PSP-SUS-207 = 22mm for 2008-2014 WRX & STIX-PSP-SUS..

Perrin 02-07 Subaru WRX/STI Air Oil Seperator Replacement Bracket (for PSP-ENG-605)..

The PERRIN Air Oil Separator traps oil from the crank case vents before it enters the intake, reduces carbon build-up, increases intercooler efficiency, which reduces the chance of performance-robbing detonation.NOTE: PSP-ENG-6052002-2007 WRX - Yes, 2002-2005 WRX installation re..