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- Christmas Picks
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- All Engine
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- All Motor Builds
- Anodized Bolt Kits
- Con Rod Bearings
- Con Rods
- Crankshaft
- Delete/Relocation Kits
- Drive Belts/Timing Belts
- Engine Accessories
- Gaskets
- Head Bolts/Studs
- Head Gaskets
- Hoses & Fittings
- Lubricants/Sealant/Grease
- Main Bearings
- PCV Hoses
- Pistons & Rings
- Pulleys
- Running In Oil
- Short Blocks
- Timing Belt Kits
- TGV Delete Kits
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- Superchargers
- Turbo/Turbo Kits
-
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-
-
- STI
- Tools
-
-
-
- ACL
- ACS-Australian Clutch Services
- ACT-Australian Clutch Technology
- Alcon
- APR Performance
- ARP
- Autometer
- ABW Motorsport
- Armorall
- Autoglym
- AVO
- Bendix
- Blouch
- Bosch
- Bowdens Own
- Boxer Performance Parts
- Brembo
- Bremtec
- Carillo
- Clutch Pro
- Cobb
- Cosworth
- CRC
- Cusco
- Dayco
- DBA
- Dixcel
- DTM Racing
- Ecliptech
- Endless
- Exedy
- G Loc
- Genuine Subaru
- GFB
- Goodridge
- Greddy
- Grimmspeed
- H&R
- Hankook
- Hardrace
- Hella
- Hot Wheels
- HKS
- IAG
- Invidia
- K&N
- Killer B
- King Springs
- Kitten
- Koyorad
- Loctite
- Lucas
- Magnafuel
- Manley
- MCA
- Meguiars
- Mishimoto
- Motul
- MRT
- Narva
- NGK
- NRG Innovations
- OS Giken
- Penrite
- Permatex
- Pierburg
- PPG Performance Gearboxes
- Process West
- Project Kics
- Project Mu
- PSR
- PWR
- Race Works
- Rain-X
- Radium
- Rally Armor
- RCM Roger Clark Motorsport
- Redline
- Rota Wheels
- Ryco
- Sakura
- Silvers Suspension
- Siruda
- Sparco
- STI
- Street Fighter
- Tomei
- Torque Solutions
- Turbosmart
- ULX 110
- VDO
- Velo
- Whiteline
- Winmax
- Wynns
- Xtreme Performance
- Zeitronix
From the very beginning of their career, They've learnt that it’s amazing where tinkering can take you.
They've been engineering for 35 years, including 10 years manufacturing components for the automotive market including Original Equipment Manufacturers (OEM). They've been determined to push the limits of high performance engines since they were tinkering with their Mini Cooper S in the ‘80s.
When they bought their WRX in 1997, They decided to step it up a knotch and get serious. At first, they bought components ‘off the shelf’. Most of these were expensive and imported. Indeed, this was true for the Australian-made ones too. Nothing, however, came even close to the quality they knew they should be, as they were made of inferior materials and of generally poor workmanship, and did not give them the performance gains they was looking for.
They started designing, testing and developing “GO FAST BITS”, a range of innovative and high-quality blow-off valves, boost controllers, pulley kits and short shifters. These products, unlike what was previously available, were meticulously designed and manufactured from the highest grade materials, working the way they were designed to.
Performance should not be about compromise – parts should fit correctly and deliver real performance outcomes, without making the car difficult to live with on a daily basis. GFB now has three qualified engineers (mechanical and mechatronic), and a team of dedicated enthusistic & passionate individuals who make the GFB name what it is today.
“GO FAST BITS” products are Proudly Australian, made in accordance with the ISO 9001 quality management system. Constantly we’re developing new, and innovative products.
Keep an eye on the website for the latest of GFB’s innovations.
John Adrian, Chief Engineer.
47 products
GFB Lightened Underdrive Pulley Kit 08-14 WRX 08+ STI 09-13 Forester 03-09 Liberty
Regular price $387.95 Save $-387.95GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) of the belt train. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.
GFB Lightened Underdrive Pulley Kit Include Belts 00-07 WRX/STI 03-08 XT Forester
Regular price $387.95 Save $-387.95GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) of the belt train. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.
GFB Lightened Underdrive Pulley Kit Include Belts 01-02 WRX/STI 98-03 Liberty
Regular price $282.95 Save $-282.95GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) of the belt train. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.
GFB Lightened Underdrive Pulley Kit Include Belts 99-00 WRX/STI 01-02 GT Forester
Regular price $387.95 Save $-387.95GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) of the belt train. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.
GFB Lightened Underdrive Pulley Kit Include Belts 94-98 WRX/STI 98-00 GT Forester
Regular price $387.95 Save $-387.95GFB Mach 2 TMS Recirculating Diverter Valve Direct Fitment 15+ WRX 14+ Forester
Regular price $198.95 Save $-198.95Using 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 model for direct factory replacement for performance without the noise
- Atmosphere venting kits to convert the recirculating valve if you want noise with your performance
Like the Respons and Deceptor Pro II, the Mach 2 is available in a range of bolt-on kits for most popular turbo models. And when we say “bolt-on”, that’s exactly what we mean! No additional adaptors, parts or vehicle modifications are required – simply remove the factory bypass valve and replace it with the Mach 2 – it’s that simple!
The Mach 2 is configured as a 100% recirculating valve (i.e. bypass, plumb back) and add on kits are also available to convert to 100% atmosphere venting.
Use the recirc model for direct factory replacement when you want the performance WITHOUT the noise! Add the conversion kit when you want some noise with your performance!
Factory bypass valves have two main shortcomings – one is that they are typically designed to start opening above a certain pressure to protect the engine, and the other is they are not optimised for throttle response. Oh, and you can’t vent them to atmosphere without stalling your engine…
The Mach 2 solves all of these issues. It can effectively hold unlimited boost (unlimited in that no turbo could ever produce enough pressure to damage it), and the TMS technology ensures maximum throttle response
GFB Respons 10-14 Liberty
Regular price $366.95 Save $-366.95Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.
Why is this so important? Two key reasons:
Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.
Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).
Hold on, it gets better. The Respons isn’t just a noise-maker. It also;
- Offers better throttle response
- Faster boost recovery on gearshift
- Unlimited boost-holding!
For example, using GFB’s TMS (Turbo Management System) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.
GFB Respons 15+ WRX 13-18 Forester
Regular price $366.95 Save $-366.95Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.
Why is this so important? Two key reasons:
Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.
Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).
Hold on, it gets better. The Respons isn’t just a noise-maker. It also;
- Offers better throttle response
- Faster boost recovery on gearshift
- Unlimited boost-holding!
For example, using GFB’s TMS (Turbo Management System) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.
GFB Respons 08-14 WRX 04-09 Liberty 09-12 Forester
Regular price $366.95 Save $-366.95Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.
Why is this so important? Two key reasons:
Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.
Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).
Hold on, it gets better. The Respons isn’t just a noise-maker. It also;
- Offers better throttle response
- Faster boost recovery on gearshift
- Unlimited boost-holding!
For example, using GFB’s TMS (Turbo Management System) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.
GFB Respons 01-07 WRX 02+ STI 03-07 Forester
Regular price $366.95 Save $-366.95Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.
Why is this so important? Two key reasons:
Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.
Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).
Hold on, it gets better. The Respons isn’t just a noise-maker. It also;
- Offers better throttle response
- Faster boost recovery on gearshift
- Unlimited boost-holding!
For example, using GFB’s TMS (Turbo Management System) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.
GFB Respons 99-00 WRX/STI 98-04 Forester 98-03 Liberty
Regular price $366.95 Save $-366.95Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.
Why is this so important? Two key reasons:
Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.
Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).
Hold on, it gets better. The Respons isn’t just a noise-maker. It also;
- Offers better throttle response
- Faster boost recovery on gearshift
- Unlimited boost-holding!
For example, using GFB’s TMS (Turbo Management System) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.
GFB Respons Blow Off Valve 1994-98 Impreza WRX & STI
Regular price $366.95 Save $-366.95Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets.
Why is this so important? Two key reasons:
Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.
Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).
Hold on, it gets better. The Respons isn’t just a noise-maker. It also;
- Offers better throttle response
- Faster boost recovery on gearshift
- Unlimited boost-holding!