GrimmSpeed Overtake BB500 Turbocharger | 2004-2021 Subaru WRX STI and 2002-2014 Subaru WRX (123006)

2004-2021 Subaru WRX STI and 2002-2014 Subaru WRX Overtake BB500 Turbocharger by GrimmSpeed The GrimmSpeed Turbocharger Program started by recognizing a need in the market for a robust, quick-spooling, and high-performing turbo. Design began from the ground up and took over 3 years of hard work, testing, and development to introduce a product that we're proud to have to carry The GrimmSpeed Name. The focus of this project was to offer a stock location OE replacement turbo, which when paired with GrimmSpeed supporting mods, allows enthusiasts to take full advantage of their EJ series turbo engine. Both of our new turbocharger options feature state-of-the-art proprietary compressors, turbines, CHRA's, and wheel designs which maximize the power made on your EJ engine at two different price points. The overall design went through tedious gas flow test analysis, strenuous failure testing, and engine pounding dyno/road testing, all to create the new standard for EJ engines: The GrimmSpeed