2015-2021 STI Engine

Gates 08-21 Subaru WRX STI Timing Belt Component Kit w/ Water Pump is a comprehensive, factory-fit solution designed for a long life. This kit incl...

GrimmSpeed 2015-2021 Subaru WRX/STI Fender Shrouds boast a stylish red powder-coat finish, blending in perfectly with other GrimmSpeed items. Craft...

GrimmSpeed Fender Shrouds for the 2015+ WRX/STI are designed to replace the standard, dull factory fabric shrouds. Manufactured from a single piece...

Torque Solution Billet Thermostat Housing for Subaru EJ Engines is the perfect complement to add to your engine build to give it that extra persona...

Torque Solution Top Feed Fuel Rails are a must have for high horsepower applications and a perfect complement to your high flow fuel injectors. Our...

Aeromotive Inc. is a true high performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components. Utilizing aerospace...

Aeromotive's High Flow Billet Fuel Rails provide 3,000 HP of flow and a simple, bolt-on installation. Compatible with 2004-2014 Subaru 2.0L WRX, th...

The HKS Billet Oil Cap Most Subaru Models offers a direct replacement to the factory oil cap, with superior durability. Its billet aluminum constru...

Increase horsepower and style under your hood. The PERRIN Cold Air Intake (CAI) system uses proper MAF alignment and tubing size, which are crucial...

Boost Tubes Right off the turbo a smooth offset coupler carries the hot side air charge to a perfectly matched 2.25” boost tube. We chose 2.25" tub...

Perrin's 2018+ STI FMIC Boost Tube Box comes with Neon YellowTubes and Black Couplers, optimized for use with their intercooler core. It also inclu...

Perrin's 2018+ STI FMIC Boost Tube Box comes with Black Tubes and Black Couplers, optimized for use with their intercooler core. It also includes B...

Perrin's 2018+ STI FMIC Boost Tube Box comes with Red Tubes and Black Couplers, optimized for use with their intercooler core. It also includes Bla...

PERRIN Front Mount Intercooler Kits are ideal for those who want to get the most out of their turbocharged Subaru. Add power and a bold new look al...

This PERRIN Performance Junction Block allows you to customize your fuel system by selecting your own fuel lines and connectors to configure your s...

The PERRIN Top Feed Fuel Rail DIY Kit is ideal for customers wanting extensive customization. It features 0.520" inside diameter channels to allow ...

The Perrin TMIC Coupler Kit offers a sophisticated touch to your engine bay. This sturdy replacement for the factory coupler includes a 5-ply fiber...