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

CVF Racing Pulley Kit, 1V WP / 2V Crank, 4 Bolt, For Ford Small Block, Kit

CVF Racing Pulley Kit, 1V WP / 2V Crank, 4 Bolt, For Ford Small Block, Kit

$352.41

View
Scott Drake Classic Air Conditioner Belts, 289, 302, After 1-2-67, 1967-1968 For Ford Mustang, Kit

Scott Drake Classic Air Conditioner Belts, 289, 302, After 1-2-67, 1967-1968 For Ford Mustang, Kit

$55.42

View
CVF Racing Power Steering Bracket, Electric Water Pump, For Ford 351C, Kit

CVF Racing Power Steering Bracket, Electric Water Pump, For Ford 351C, Kit

$278.90

View
CVF Racing For Chevrolet Big Block Alternator Relocation Bracket for Clearing A-Arms

CVF Racing For Chevrolet Big Block Alternator Relocation Bracket for Clearing A-Arms

$79.99

View
Holley Pulley Set, Serpentine, LS Engine Swap Accessory Drive System, Sanden 7 A/C, For Chevrolet, V8, Kit

Holley Pulley Set, Serpentine, LS Engine Swap Accessory Drive System, Sanden 7 A/C, For Chevrolet, V8, Kit

$3,116.51

View
ATI Performance Products Supercharger Pulley, 8.59 in. Diameter, 8 Groove, Aluminium, Front, 2014+ LT1 LT4 Dry Sump 5 Percent Overdrive, Each

ATI Performance Products Supercharger Pulley, 8.59 in. Diameter, 8 Groove, Aluminium, Front, 2014+ LT1 LT4 Dry Sump 5 Percent Overdrive, Each

$385.46

View