Quick view GFB | sku: 5933 GFB Mach 2 Atmosphere Conversion Kit - 2015+ STI If you've purchased T9103 or T9133 and want to upgrade it to a vent to atmosphere BOV, here's the kit you need. Comes with a trumpet, spring, and plug. View Details Compare
Quick view GFB | sku: T9103 GFB Mach 2 TMS Recirculation Diverter Valve - 2015+ STI Here's the simple and essential mod for 30% quicker boost by utilizing proven TMS technology to ensure dependable boost holding and optimum throttle response. If you don't need the patented venting bias adjustment feature of the Respons or Deceptor Pro,... View Details Compare
Quick view GFB | sku: T9003 GFB Response TMS Adjustable BOV - 2015+ STI Atmosphere venting BOV won’t work on your car? Try a GFB Respons – you’ll be surprised! JUST ANOTHER DUAL-PORT BOV? On the surface it may look like just another dual-port blow-off valve,but the Respons is actually much more than that... View Details Compare
Quick view GFB | sku: 2016 2016 -GFB Pulley Kit SUBARU -BRZ -SCION 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. The effect is similar to a lighter flywheel, and the car feels more lively and willing to rev... View Details Compare
