2015-2021 Subaru STI

Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick with the PERRIN BOV/BPV. HIGH FLOW With large 1.225" inle...

The PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness and response. REDU...

Why You Want It The PERRIN Turbo Inlet Hose, made with advanced silicone technology, outperforms the OEM part with a smoother, larger interior for...

Why You Want It The PERRIN Turbo Inlet Hose, made with advanced silicone technology, outperforms the OEM part with a smoother, larger interior for...

Why You Want It The PERRIN Turbo Inlet Hose, made with advanced silicone technology, outperforms the OEM part with a smoother, larger interior for...

The PERRIN Standard Intercooler Core measures 28” long x 9.25” tall x 3.5” deep, with a total volume of 906.5 cu-in. It's a versatile choice that d...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

DESCRIPTION Perrins pulley cover is designed to give your engine bay extra aesthetics while protecting your engine components from debris and forei...

DESCRIPTION The pinch weld jack points are easily bent and damaged during routine tasks like tire changes and car maintaince. This damage occurs fr...

DESCRIPTION The Perrin Brackets for HELLA Horns are designed for a perfect fit. Tailored for specific models makes for a better fit than competitor...

DESCRIPTION The Perrin Air Oil Separator is not a catch can. Catch cans capture engine blow-by and stores it in a container, which requires constan...

DESCRIPTION The Perrin TMIC is 12% larger than the nearest competitor's core. The large core means less restriction and better cooling capabilities...

Performance During cornering, the Perrin Strut Tower Brace improves chassis rigidity, enhances steering precision under high load conditions, and r...

COMPLETE THE LOOK Matching Perrin's signature pulley cover design, the angled cutouts look great while concealing the factory fender gap.  DESIGN P...

COMPLETE THE LOOK Matching Perrin's signature pulley cover design, the angled cutouts look great while concealing the factory fender gap.  DESIGN P...

COMPLETE THE LOOK Matching Perrin's signature pulley cover design, the angled cutouts look great while concealing the factory fender gap.  DESIGN P...

COMPLETE THE LOOK Matching Perrin's signature pulley cover design, the angled cutouts look great while concealing the factory fender gap.  DESIGN P...

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. DESIGN Dress up the top of your radiator with t...

The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. DESIGN Dress up the top of your radiator with t...

The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. DESIGN Dress up the top of your radiator with t...

The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. DESIGN Dress up the top of your radiator with t...

The PERRIN Electronic Boost Control Solenoid (EBCS) Pro is designed to control today's high performance turbochargers with its ultra-fast response ...