If you are looking for the ultimate in high performance - the extreme performance kit is for you. Providing the maximum horsepower for being competitive at any time and still keeping dependability for daily driving.
Greddy Turbocharger Upgrade Kits are designed for vehicles that are turbocharged from the factory. They will produce a power level that cannot be fully obtained by using the original turbocharger(s).
Upgrade your turbo system to an HKS precision tuned Sport upgrade! Designed to promote maximum power and response for maximum airflow throughout the RPM band.
***All Turbo Kits, Upgrades, and Turbochargers are Special Order Items***
Agency Power has completed the best GT35R complete turbo kit for your Subaru WRX or STI vehicle. It's a bolt on high horsepower solution designed to maximize performance for street, drag, or the ultimate road racing needs.
All P.I.T. Wastegates are constructed from the highest quality materials increasing reliability and durability. There's no substitute for quality when your engine's on the line. Air fittings and stainless steel hardware are included.
One of the most important components in a well designed turbocharged engine is a properly sized wastegate. Greddy offers 4 sizes and various spring rates to best suit your engines boost range
Use the GReddy relief valve as a secondary boost safety device. By adjusting the set screw you can control the release point, protecting your intake manifold and engine internals from boost spikes or overboosting.