Lightened underdrive pulley kit (3 pulleys and belts included)

GFB lightened 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 designs pulley kits to improve acceleration by reducing crankshaft rotational mass (inertia) and cutting parasitic load from driven accessories. The effect is similar to a lighter flywheel and the engine feels more lively and willing to rev.

We know that people are sometimes concerned about possible adverse effects of lightweight pulleys and underdriving but rest assured we have done our homework!
GFB optimises the underdrive ratios to maintain full accessory performance with no adverse effects. While some engine types can suffer harmonic issues with lightweight pulleys, GFB avoids those applications. GFB thoroughly tests every kit to ensure it won’t cause engine damage in the short or long term.

Lightweight aircraft grade alumimium Lightened underdrive pulley kit (3 pulleys and belts included) also suits: SUBARU XT MY05-08 (Series II)
SUBARU XT MY03-04 (Series I)
SUBARU STi MY03-07
SUBARU STi MY03-07
SUBARU WRX MY06-07 (Aka “Hawkeye”)
SUBARU STi MY03-07
SUBARU WRX MY03-05 (Aka “Peanut Eye”)