Borla 04-07 STi XR-1 Cat-Back Exhaust Drivetrain>Differential Seal Kits All BBK Power Plus throttle

All BBK Power Plus throttle bodies offer OEM drive ability but with up to 30% improved airflow for improved horsepower

The AEM 21-836WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing

7L Cummins

available in standard Chrome Silver or AWE's Diamond Black finishes

Factory style laser cut machined flanges are used used for a secure leak-free seal

Borla 04-07 STi XR-1 Cat-Back Exhaust Drivetrain>Differential Seal Kits All BBK Power Plus throttlePart# 140075 is the more Aggressive "S Type" Cat Back(tm). The mellow "Touring" Cat Back(tm) exhaust is part# 140053 Borla(r) Performance once again leads the industry with a high flow performance exhaust for the hot Subaru WRX and WRX STI. This Cat Back(tm) system, Borla(r) #140075, is custom designed by Borla(r) engineers for the 2. 5L turbocharged 4 cylinder engine with automatic and manual transmissions. Winning on racetracks around the world has