Go Fast Bits Underdrive Pulley Kit w/Belts Subaru Impreza RS 1999-2003 Vehicle Model_WRX STI Sport Compact and Motorcycle applications

Sport Compact and Motorcycle applications

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

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

This is a direct factory replacement kit that includes everything you need for a complete install with no cutting or further modification to your WRX

Wheel chock stoppers

Go Fast Bits Underdrive Pulley Kit w/Belts Subaru Impreza RS 1999-2003 Vehicle Model_WRX STI Sport Compact and Motorcycle applicationsOne 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