GFB 2221 Lightweight Alternator Pulley suit BRZ/86/FR-S

GFB lightweight pulley kits are made from aircraft-grade 6061-T6 aluminium and offer faster acceleration through significant weight reduction on the crankshaft. 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.

Go Fast Bits (GFB)

Go Fast Bits (GFB) is an Australian manufacturer of performance components for turbocharged and modified vehicles. The GFB range includes blow-off and diverter valves, boost-control products, short-shift systems, pulley kits and other performance hardware designed for enthusiast street cars and motorsport applications. With a strong focus on engineering, adjustability and application-specific design, GFB products provide practical upgrade solutions for drivers looking to improve boost control, response, sound and the operation of their vehicle's performance systems.