GFB 02-07 WRX / 04-10 STI TMS Respons Blow Off Valve Kit - T9003

If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can...

GFB 06-10 Mazdaspeed 3/6 / 90-94 Eclipse TMS Respons Blow Off Valve Kit - T9002

If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can...

GFB 08-10+ WRX / 05-09 LGT TMS Respons Blow Off Valve Kit - T9001

If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can...

GFB Gauge Port/Boost Tap 2013+ Audi 1.2L/1.4L TFSI/TSI - 5801

Most modern engines have eliminated vacuum ports from the intake manifold, making it difficult to install boost gauges, boost controllers, aftermarket blow-off valves and other devices that require a...

GFB 08+ Subaru WRX Short Shifter - 4005

True to our philosophy of Performance Without Compromise, GFB's Short Shift Kits are designed with a unique linkage system that means the shift throw is fully adjustable whilst retaining the stock...

GFB 04-07 STI Short Shifter Kit - 4002

True to our philosophy of Performance Without Compromise, GFB's Short Shift Kits are designed with a unique linkage system that means the shift throw is fully adjustable whilst retaining the stock...

GFB ATOMIC Manual Boost Controller - 3001

Boasting a repeatable and stable boost curve, quick rise rate, and unbeatable value, GFB's Atomic has earned a reputation as being one of the most reliable and effective manual boost controllers on...

GFB 13+ Subaru BRZ / 13+ Scion FR-S Lightweight Aluminum Water Pump Pulley - 2223

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...

GFB Subaru BRZ/Toyota 86/Scion FR-S Lightweight Crank Pulley - 2220

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...

GFB 13 Subaru BRZ / 13 Scion FR-S 3 Pc L/W Pulley Kit (Inc Crank/Alternator/Water Pump Pulleys) - 2016

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...

GFB 08+ WRX/STi / 09+ Forester / 03-09 LGT 3 pc Underdrive/Non-Underdrive Pulley Kit - 2014

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...

GFB Evo 4-9 Under-Drive Crank Pulley w/ Belt - 2011

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...