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 Fuel Pressure Regulator Gauge
Regular price $37.00 Save $-37.0040mm (1 1/2 inch) Fuel Pressure Gauge, silicone fluid filled for stable readings and long life.
Features a clear and easy-to-read dual scale pressure range from 0 to 120 psi/8 bar.
With a 1/8″ NPT male thread connection this gauge is directly compatible with all GFB fuel pressure regulators.
GFB Atomic Single Stage Boost Controller
Regular price $104.00 Save $-104.00The Atomic has earned a reputation as being one of the most reliable and effective manual boost controllers on the market, boasting a repeatable and steady boost curve, quick rise rate, and great bang-for-buck!
GFB Screw-in Plug (Block Off Recirc or Atmo Outlet)
Regular price $12.95 Save $-12.95Screw-in Plug
GFB Non-Underdrive Crank Pulley 94+ WRX/STI 98+ Forester 98+ Liberty
Regular price $188.95 Save $-188.95GFB have re-designed their WRX lightweight pulley to provide even more benefits. It is now shaped to look exactly like the factory Subaru pulley, so it goes unnoticed in your engine bay - it even uses the factory belts! A significant amount of weight has been removed from around the rim for even better throttle response. The pulley weighs in at 578g (previously 790g), compared to the factory 2180g on the WRX and 2575g on the STI. This pulley will improve throttle response (particularly off-boost response) and allow the engine to rev more freely in the upper rev range.
It suits all Subaru EJ-series engines, and does not require additional belts
GFB Lightweight Pulley Kit BRZ/86
Regular price $387.95 Save $-387.95This kit is supplied with 3 pulleys, not just for looks - the combined saving of 2.2 kg is significantly more than what is achieved by replacing just the crank pulley alone.
The weight doesn’t tell the whole story either - even though the saving is a significant 77%, the actual rotating inertia reduction (inertia is what counts) is 83%.
Like all GFB lightweight pulley kits, you can feel the improvements:
GFB Mach 2 TMS Recirculating Diverter Valve Direct Fitment 10-14 GT Liberty
Regular price $209.00 Save $-209.00Using 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).
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
Suits:
GFB Mach 2 TMS Recirculating Diverter Valve Direct Fitment 04-09 GT Liberty 08-12 XT Forester 08-14 Impreza WRX
Regular price $236.50 Save $-236.50Using 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).
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
Suits:
GFB Mach 2 TMS Recirculating Diverter Valve Direct Fitment 05-07 XT Forester (Facelift) 01-07 Impreza WRX & STI 08-20 STI
Regular price $236.50 Save $-236.50Using 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).
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
Suits:
GFB Mach 2 TMS Recirculating Diverter Valve Direct Fitment 98-00 GT Forester 03-04 XT Forester 99-00 STI 98-03 Liberty GT & B4
Regular price $236.50 Save $-236.50Using 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).
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
Suits:
GFB Mach 2 TMS Recirculating Diverter Valve Direct Fitment 97-98 Impreza WRX
Regular price $209.00 Save $-209.00Using 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).
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
Suits:
GFB Deceptor Pro II TMS 10-14 (BM, BR) Liberty GT
Regular price $524.00 Save $-524.00So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the ‘Respons’ concept even further...
Suits:
GFB Deceptor Pro II TMS 14-On XT Forester (FA20 Engine) 15-On WRX (FA20 Engine) 16 On Levorg FB16/FA20 Turbo
Regular price $524.00 Save $-524.00So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the ‘Respons’ concept even further...
Suits:
GFB Deceptor Pro II TMS 03-09 Liberty GT 08-12 SH XT Forester 08-14 Impreza WRX
Regular price $524.00 Save $-524.00So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the ‘Respons’ concept even further...
Suits:
GFB Deceptor Pro II TMS 01-07 Impreza WRX & STI 08-20 STI Only 05-07 XT Forester (Facelift Model)
Regular price $524.00 Save $-524.00So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the ‘Respons’ concept even further...
Suits:
GFB Deceptor Pro II TMS 98-00 GT Forester 03-04 XT Forester 99-00 Impreza WRX & STI 98-03 Liberty GT & B4
Regular price $524.00 Save $-524.00So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the ‘Respons’ concept even further...
Suits:
GFB Deceptor Pro II TMS 97-98 Impreza WRX
Regular price $524.00 Save $-524.00So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the ‘Respons’ concept even further...
Suits:
G-Force III Electronic Boost Controller
Regular price $409.00 Save $-409.00G-Force II Electronic Boost Controller
Regular price $389.00 Save $-389.00
G-Force II More Powerful Features, more Simplicity! Performance without the hassle – easier fitment, faster tuning & setup and a simple user interface.
If you’ve used the original GFB G-Force, you’ll know that it represented outstanding value for money, with advanced capabilities and features usually reserved for very expensive units.
The G-Force II has taken everything that was great about the original, and made it better! There are new features, existing ones have been improved, and most importantly, it’s even easier to use!
If you haven’t experienced the original G-Force, all you need to know is the G-Force II is the best value-for-money electronic boost controller out there, and it’s not just for street use – even hard-core racers will find the G-Force II has what it takes to perform on the track!
Touch Screen Interface With Menu Button
Capacitive touch screen and new menu button make menu navigation exceptionally easy – no more pressing or holding multiple buttons!
Choose Your Screen Colours
There are six button illumination colour options to match your car’s dash
New Closed-Loop Boost Control Strategy
For the fastest possible boost rise rate and minimum dropoff at high RPM, the new closed-loop logic helps prevent boost variations that can occur in different gears, RPM ranges and atmospheric conditions
Internal MAP Sensor Handles Boost Pressure Up To 50psi (3.45bar, 345kPa)
Still class leading performance!
Improved Scramble Boost Feature With Remote Switching Capability
Scramble boost now uses a dedicated boost preset (instead of a percentage increase) so that peak boost, rise rate, and closed-loop control can be specifically tailored to suit your needs when activated. You can now lower OR increase boost pressure, AND change the spool-up rate and correction, all at the press of a button.
6 Boost Presets, Individually Programmable
You can program 6 different peak boost pressures and rise rates, then select on-the-fly
New Peak-Hold Display
Shows the peak boost achieved after each boost run
Remote Input Trigger
Connect the remote input wire to a switch, button, or ECU output to change boost presets or activate scramble boost
Real-Time Boost Gauge; Display In Bar, Psi, Or KPa
Choose the gauge display pressure units to suit your preference
Real-Time Vacuum Display
Now shows manifold vacuum as well as boost
Over-Boost Warning/Cut
User adjustable warning to indicate if the boost pressure is too high and to cut the solenoid to lower boost and protect the engine
GFB Blow Off Valve SV52
Regular price $388.00 Save $-388.00In the race to create the most compact and highest flowing blow-off valve, GFB’s SV52 pulls ahead of the pack.
Standing only 86mm tall (including the weld-on adaptor), the SV52 is 10mm shorter than the nearest competitor, AND flows more!
Consider these questions when you’re looking for a BOV for your high-powered, forced induction engine:
Will it handle the pressure?…………………………….. YES! Is 300psi enough?
Will it flow enough?………………………………………… YES! It outflows everything else in its class!
Is it small enough to fit my engine bay?…………..YES! 10mm shorter than the nearest competitor!
Will it last?………………YES! It comes with a lifetime warranty!
Strength is important;
Realising that a high-flowing valve like this will see duty in some high-boost environments, we made sure the SV52 tops the class in that category as well, giving it an astonishing boost pressure rating of 300psi!
The SV52 also includes 2 springs PLUS a spring pre-load adjustment system so you can dial it in for optimum throttle response and boost recovery after gearshift, without resorting to the costly hit- and-miss approach of purchasing extra springs.
Suits engines with manifold vacuum ranging from 5-22inHg (17-74.5kPa, 2.5-11psi vacuum)
BODY
The SV52’s unparalleled pressure capacity starts with a monobloc body design, CNC machined from a single aluminium billet that ensures strength without adding unnecessary bulk.
PISTON
The anodized piston bore creates an extremely hard and low-friction surface on which the single piece aluminum 52.5mm piston glides, and will continue to do so over countless cycles. It features an arrangement of Viton o-ring seals unique to GFB.
DESIGN
Why do we use a piston instead of the more common diaphragm design?
Strength and reliability is the primary factor, something that a diaphragm simply cannot match in a high-boost BOV environment. Diaphragms have their place (we use them in our wastegates), as they offer low friction and good sealing capability. However, a rolling diaphragm is only designed to receive a net pressure on one side, which essentially “inflates” it against the walls of the chamber in which it resides, exactly how it is used in a wastegate.
However, a BOV is exposed to frequent pressure reversals – every time you accelerate and lift off.
For a diaphragm, this means it is repeatedly collapsing on itself under boost, then inflating under vacuum. Eventually, this leads to diaphragm failure. A piston on the other hand is immune to this issue, and will continue to operate under the most extreme pressure, temperature, and cyclic conditions.
The unique mounting method of the SV52 is one of the ways we’ve been able to save unnecessary bulk.
By eliminating the v-band style mount, the piston and its venting ports can sit much lower, which reduces the overall height to a number others can’t match.
This is a universal partGFB Basic Short Shift Kit 6 Speed 01+ STI
Regular price $250.95 Save $-250.956-Speed Short Shift – Basic Kit
New from GFB is the STi 6-speed Short Shift Basic Kit, which has been designed as an infinitely more affordable alternative to STI’s own aftermarket shifter.
It is derived from the popular and unique GFB STI short shifter (part # 4002), which consists of two main parts; the gear lever and the linkage clamp, which work together to allow shift-throw adjustment over the largest range of any shifter on the market.
The new basic kit utilises the adjustable gear lever from the 4002 kit, without the linkage clamp. This means the basic kit allows shift throw adjustment, but over a smaller range. Importantly however, it is easily upgraded to the 4002 kit with the addition of the linkage clamp.
So why choose the basic over the 4002 kit?
When using the full 4002 kit, some people find that the shorter settings are actually too extreme for their taste (particularly on MY06-08 models, as the factory shift is shorter than earlier versions), and only end up using a small amount of the shifter’s range. In such cases, the Basic kit gives the same result at a lower price.
If however you decide that you want to go shorter, you can always purchase the linkage clamp separately and upgrade to the full 4002 kit at a later date – it really is win-win!
As with the 4002 full kit, installation of the Basic kit is all done from within the car.
So how much shorter is the throw?
The GFB Basic kit is adjustable from the factory setting down to around 32-35mm per gate (depending on year model).
Add the linkage clamp and the possible throw range drops to a minuscule 20-22mm
GFB Short Shift Kit 6 Speed 01+ STI
Regular price $355.95 Save $-355.95GFB Short Shift Kit 5 Speed 08-14 WRX
Regular price $261.95 Save $-261.95GFB's Short Shift kits are like no other. Until you feel the action of one for yourself, you won't believe the difference!
GFB's unique system means that not only is the shift throw distance fully adjustable, it can be reduced more than any other brand by a long shot (at the shortest setting, the throw from 3rd to 4th is a mere 55mm), whilst retaining the stock gearstick height.If you want a race-car feel when you change gears, look no further than a GFB short shift kit, the shortest throw shifter on the market!
GFB Short Shift Kit 5 Speed 94-00 WRX/STI 01-07 WRX
Regular price $261.95 Save $-261.95GFB's Short Shift kits are like no other. Until you feel the action of one for yourself, you won't believe the difference!
GFB's unique system means that not only is the shift throw distance fully adjustable, it can be reduced more than any other brand by a long shot (at the shortest setting, the throw from 3rd to 4th is a mere 55mm), whilst retaining the stock gearstick height.If you want a race-car feel when you change gears, look no further than a GFB short shift kit, the shortest throw shifter on the market!
