Injen 18-21 Subaru WRX STI H4 2.5L Turbo SP Aluminum Series Cold Air Intake - Polished Air Intake Systems>Intake Gaskets INOVIT™ FRIXION 5 is a

INOVIT™ FRIXION 5 is a beautiful piece to behold

AEM's Wideband Controllers with X-Series digital technology can reduce deadtime and improve the performance of your vehicle through more accurate AFR tuning

BMR has designed the SP041 for the street performance crowd who want to use their cars in a variety of application

Maximum safe power is all automatic with a Derringer - you just choose your preferred power level and enjoy the ride

weight reduction of up to 75 pounds is easily achievable

Injen 18-21 Subaru WRX STI H4 2.5L Turbo SP Aluminum Series Cold Air Intake - Polished Air Intake Systems>Intake Gaskets INOVIT™ FRIXION 5 is aInjen Technology has done it once again with this new short ram air intake for the 2018 2021 Subaru WRX STI Equipped with the H4 2. 5L Turbo Engine. The Injen Technology SP1208 performance air intake system is the result of countless hours invested in research and development to provide a proven intake system designed to add power and performance to your STI. The Injen Technology SP1208 intake system is a direct replacement for that restrictive