Underdrive

Go Faster ? Add Lightness, GFB’s Lightweight Pulley Kits offer sharper throttle response and faster acceleration by significantly reducing the rotating mass at the engine. Made from a single billet of 6061-T6 aluminium, then precision CNC machined to exacting tolerances, our pulley kits offer an exceptional bolt-on performance advantage without the need for supporting mods or tuning
3-piece underdrive pulley kit (Crank, alternator & power steering pulleys & required bel
Subaru Suits WRX/STi MY08-14, Liberty GT MY03-12, Forester XT MY09-12)

• Sharper Throttle Response and “urge”, engine feels more lively and willing to rev, up to 85% rotating inertia reduction, will not cause engine damage, no negative effects on driven accessory performance

GO FASTER ? ADD LIGHTNESS, GFB’s Lightweight Pulley Kits offer sharper throttle response and faster acceleration by significantly reducing the rotating mass at the engine. Made from a single billet of 6061-T6 aluminium, then precision CNC machined to exacting tolerances, our pulley kits offer an exceptional bolt-on performance advantage without the need for supporting mods or tuning
Crank, alternator and water pump pulleys.
Subaru BRZ/86/FR-S

• SHARPER THROTTLE RESPONSE AND “URGE”, ENGINE FEELS MORE LIVELY AND WILLING TO REV, UP TO 85% ROTATING INERTIA REDUCTION, WILL NOT CAUSE ENGINE DAMAGE, NO NEGATIVE EFFECTS ON DRIVEN ACCESSORY PERFORMANCE

GO FASTER ? ADD LIGHTNESS, GFB’s Lightweight Pulley Kits offer sharper throttle response and faster acceleration by significantly reducing the rotating mass at the engine. Made from a single billet of 6061-T6 aluminium, then precision CNC machined to exacting tolerances, our pulley kits offer an exceptional bolt-on performance advantage without the need for supporting mods or tuning
Lightweight Pump Pulley
Subaru BRZ/86/FR-S

• SHARPER THROTTLE RESPONSE AND “URGE”, ENGINE FEELS MORE LIVELY AND WILLING TO REV, UP TO 85% ROTATING INERTIA REDUCTION, WILL NOT CAUSE ENGINE DAMAGE, NO NEGATIVE EFFECTS ON DRIVEN ACCESSORY PERFORMANCE

GO FASTER ? ADD LIGHTNESS, GFB’s Lightweight Pulley Kits offer sharper throttle response and faster acceleration by significantly reducing the rotating mass at the engine. Made from a single billet of 6061-T6 aluminium, then precision CNC machined to exacting tolerances, our pulley kits offer an exceptional bolt-on performance advantage without the need for supporting mods or tuning
Underdrive crank pulley
Nissan NISSAN 300ZX

• SHARPER THROTTLE RESPONSE AND “URGE”, ENGINE FEELS MORE LIVELY AND WILLING TO REV, UP TO 85% ROTATING INERTIA REDUCTION, WILL NOT CAUSE ENGINE DAMAGE, NO NEGATIVE EFFECTS ON DRIVEN ACCESSORY PERFORMANCE

GReddy FD3S Pulley Kit

PERRIN 15-18 Subaru WRX / 13-20 BRZ / 14-18 FXT / 13-16 Crosstrek Lightened Crank Pulley – Black

PERRIN 15-18 Subaru WRX / 13-20 BRZ / 14-18 FXT / 13-16 Crosstrek Lightened Crank Pulley – Blue

PERRIN 15-18 Subaru WRX / 13-20 BRZ / 14-18 FXT / 13-16 Crosstrek Lightened Crank Pulley – Red

PERRIN 15-21 Subaru WRX / 18-20 Crosstrek / 14-18 FXT Lightweight Water Pump Pulley – Blk

PERRIN 15-21 Subaru WRX / 18-20 Crosstrek / 14-18 FXT Lightweight Water Pump Pulley – Blue

PERRIN 15-21 Subaru WRX / 18-20 Crosstrek / 14-18 FXT Lightweight Water Pump Pulley – Red