LIGHTENED UNDERDRIVE PULLEY KIT - 3 PIECE (WRX 03-07/STI 03-07/FORESTER 03-07)
GFB lightweight underdrive pulley kit (part number 2010) is made from anodized aircraft-grade billet 6061-T6 aluminium and offers sharper throttle response and faster acceleration. Kit includes: crank, alternator and power steering pulleys, and 2 belts.
GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) on the crankshaft as well as parasitic loads from the driven accessories. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.
Lightweight aircraft grade alumimium Lightened underdrive pulley kit (3 pulleys and belts included) also suits:
- SUBARU STi MY03-07
- SUBARU STi MY03-07
- SUBARU WRX MY06-07 (aka "hawkeye")
- SUBARU WRX MY03-05 (aka "peanut eye")
- SUBARU STi MY03-07
- SUBARU XT MY05-08 (series II)
- SUBARU XT MY03-04 (series I)