Go Fast Bits Subaru Belt Kit for 2002, 2003 & 2010 Lightweight Engine Pulleys

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

Go Fast Bits Subaru BRZ/86/FR-S Lightweight Alternator Pulley

Like all GFB lightweight pulleys, these begin life as a single 6061-T6 aluminium alloy billet, which is then precision CNC machined to exacting tolerances. We then anodize them black for a stealthy...

Go Fast Bits Subaru BRZ/86/FR-S Lightweight Engine Pulley

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

Go Fast Bits Subaru BRZ/86/FR-S Lightweight Water Pump Pulley

Like all GFB lightweight pulleys, these begin life as a single 6061-T6 aluminium alloy billet, which is then precision CNC machined to exacting tolerances. We then anodize them black for a stealthy...

Go Fast Bits Subaru BRZ/86?FR-S Lightweight Crank Pulley

Like all GFB lightweight pulleys, these begin life as a single 6061-T6 aluminium alloy billet, which is then precision CNC machined to exacting tolerances. We then anodize them black for a stealthy...

Go Fast Bits Subaru EJ20, EJ22 & EJ25 Engine Lightweight Engine Pulley

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

Go Fast Bits Subaru STi 02 6-Speed Basic Short-Throw Shift Kit

  GFB’s Short Shift kits are like no other. Until you feel the action of one for yourself, you won t believe the difference! Why did we bother to...

Go Fast Bits Subaru STi 02 6-Speed Short-Throw Shift Kit

  GFB’s Short Shift kits are like no other. Until you feel the action of one for yourself, you won t believe the difference! Why did we bother to make...

Go Fast Bits Subaru WRX 01-07, STi 02+, XT Forester 05-08 Hybrid Dual Outlet Blow-Off Valve

In a time before Justin Bieber, Y2K, and even Google, the year is 1998 and GFB’s founding engineer John Adrian is so sick of his new WRX stalling with an atmosphere-venting BOV he decided he...

Go Fast Bits Subaru WRX 01-07, STi 02+, XT Forester 05-08 Mach 2 TMS Blow-Off Valve

Using GFB’s TMS technology the Mach 2 can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears (more information below). Recirculation...

Go Fast Bits Subaru WRX 01-07, STi 02+, XT Forester 05-08 Respons TMS Blow-Off Valve

On the surface, it may look like just another dual-port blow-off valve, but the Respons is actually much more than that. Featuring GFB’s patented venting bias adjustment system, the...

Go Fast Bits Subaru WRX 08 Short-Throw Shift Kit

  GFB’s Short Shift kits are like no other. Until you feel the action of one for yourself, you won t believe the difference! Why did we bother to make...