Grimmspeed Overtake BB500 Turbo Kit for EJ WRX/STi (123006) Akrapovic More from Seibon:

More from Seibon:

• Compact actuator body with multiple spring options available

F1-like up-shifting while experiencing smooth

Fits with stock or stock-placement aftermarket intercoolers

Includes the STM Lightweight Front Bumper Brace to delete an additional 15 pounds off your car

Grimmspeed Overtake BB500 Turbo Kit for EJ WRX/STi (123006) Akrapovic More from Seibon:The Grimmspeed Overtake BB500 Turbo Kit is a stock location, bolt on turbo for 2004+ Subaru STi and 2002 2014 WRX. The BB500 is a quick spooling, ball bearing turbo able to hit 40 psi before 4100 rpm. Testing delivered 129 HP over a tuned stock STI turbo even more expected with additional mods! Just like with the JB400, drivability was the #1 goal and by combining slick aero wheel designs with a dual ceramic ball bearing center housing rotating