GFB lightweight pulley kits are made from aircraft-grade 661-T6 aluminium and offer faster acceleration through significant weight reduction on the crankshaft. Most of Go Fast Bits kits are underdriven, which means the accessories are driven slightly slower to reduce parasitic losses. 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. The underdrive ratios have been optimised to ensure there are NO adverse effects on the performance of the accessories, and whilst it is true that some engine types do suffer harmonic issues from lightweight pulleys, we steer clear of those. The kits we release are thoroughly application tested and do NOT cause engine damage in the short or long term.

More From This Category

Ford Big Block Alternator Pulley

Ford Big Block Alternator Pulley

$98.96

Holley G3 Hemi P.S. Pump Adapter Kit

Holley G3 Hemi P.S. Pump Adapter Kit

$1,054.39

CVF Racing Serpentine System, For Big Block For Chevrolet Supercharger, AC, Power Steering, Alternator & Root Style Blower, All Inclusive, Kit

CVF Racing Serpentine System, For Big Block For Chevrolet Supercharger, AC, Power Steering, Alternator & Root Style Blower, All Inclusive, Kit

$4,246.30

Holley Alternator, Performance High-Amp, GM DR44G, 12 V, 105 amps, Internal Regulator, Serpentine Pulley, For Chevrolet, Each

Holley Alternator, Performance High-Amp, GM DR44G, 12 V, 105 amps, Internal Regulator, Serpentine Pulley, For Chevrolet, Each

$551.53

Holley Air Conditioner Bracket, Passenger Side, Aluminium, Clear Anodised, Sanden SD7, For Chevrolet, Small Block LT, Each

Holley Air Conditioner Bracket, Passenger Side, Aluminium, Clear Anodised, Sanden SD7, For Chevrolet, Small Block LT, Each

$603.46