Go Fast Bits Underdrive Pulley Kit w/Belts Subaru Impreza RS 1999-2003 Vehicle Model_WRX STI you can see the dyno

you can see the dyno charts of this spacer paired with our intake manifold spacer and the gains are tremendous

Toyota Celica GT & GTS - 2002-2005

(Our complete wideband AFR gauge is available here: http://prosportgauges

Wheel chock stoppers

Sport Compact and Motorcycle applications

Go Fast Bits Underdrive Pulley Kit w/Belts Subaru Impreza RS 1999-2003 Vehicle Model_WRX STI you can see the dynoOne of the ways that you can improve the response in your engine is by adding a lightweight pulley set. Lightweight pullies have less rotational mass when compared to OEM pullies and less rotational mass means that you will have improved engine response for a little bump in both power and torque. Part #: 2002 This is the Go Fast Bits 3 Piece Underdrive Pulley Kit which includes the crank pulley, and both alternator and power steering pullies. These