Go Fast Bits

Go Fast Bits (GFB) is an Australian performance brand specializing in advanced boost control components for turbocharged and supercharged engines. From diverter valves and blow-off valves to electronic boost controllers, every GFB part is engineered to improve throttle response, reduce turbo lag, and provide consistent, reliable boost management. GFB’s innovative designs—like the patented TMS (Trumpet Modulation System) and dual-outlet valves—let you fine-tune sound and performance to match your driving style.

The collection includes:

  • Blow-Off Valves (BOV) – vent to atmosphere for a distinctive sound
  • Diverter Valves – recirculate airflow to maintain metered air
  • Boost Controllers – manual and electronic for precise tuning
  • Adjustable Wastegate Actuators – quicker spool and better boost holding

Machined from high-grade materials and tested in demanding high-boost environments, GFB components deliver OEM+ fitment and long-term durability. Browse the full range to find the right upgrade for your forced induction setup.

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GFB internal wastegate actuator with black anodized body and adjustable turnbuckle rod for TD04 turbochargers.
$209.25 $232.50
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GFB WGA high performance internal wastegate actuator for Mitsubishi EVO X 4B11T engines
$209.25 $232.50
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GFB 7300 wastegate actuator with stainless steel springs and turnbuckle rod for Mitsubishi Lancer Ralliart.
$209.25 $232.50
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GFB 7psi middle-tension wastegate spring for EX38 and EX44 external wastegate actuators
$24.75 $27.50
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GFB EX38 38mm V-Band external wastegate with investment cast stainless steel body and 10psi spring.
$379.80 $422.00
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GFB 7002 44mm V-band external wastegate with investment cast stainless steel body and 100mm compact height.
$422.01 $468.90
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GFB 6705 replacement mounting gasket for Response series T9003 and T9503 blow-off valves.
$14.22 $15.80
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Genuine GFB replacement flange gasket for Response series blow-off valves T9001, T9002, T9501, and T9502.
$14.22 $15.80
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Precision machined replacement plunger for GFB DV+ performance diverter valves.
$11.07 $12.30
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Metallic replacement plunger spring for GFB DV+ performance diverter valves
$9.45 $10.50
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Single extended high-tensile mounting bolt for GFB DV+ diverter valve kits.
$3.42 $3.80
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Genuine GFB DV+ replacement piston spring for T9351 through T9359 diverter valve models.
$9.18 $10.20
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Machined metal GFB standard replacement blow-off valve trumpet with threaded base for atmospheric venting.
$40.50 $45.00
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Machined GFB 6107 screw-in plug for blow-off valve trumpet and plumb-back outlets.
$14.31 $15.90
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GFB Mach 2 atmosphere conversion kit 5933 featuring the atmospheric trumpet, spring, and port plug.
$39.60 $44.00
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GFB Mach 2 atmosphere conversion kit base plate with O-ring and mounting hardware
$39.60 $44.00
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GFB Mach 2 atmosphere conversion trumpet and hardware for T9107 and T9125 diverter valves.
$32.85 $36.50
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GFB 5801 gauge port and boost tap adapter for Volkswagen intake manifold
$58.95 $65.50
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GFB 5800 aluminum boost gauge port adapter for 2006-2014 Volkswagen GTI.
$58.95 $65.50
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GFB 5730 mechanical fuel pressure gauge with a 40mm face, 0-120 PSI scale, and 1/8 MPT threaded connection.
$35.01 $38.90
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Machined metal GFB 5702 whistling trumpet attachment for blow off valve atmospheric venting.
$40.41 $44.90
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GFB 5701 machined whistling trumpet attachment for Stealth FX and WRX Hybrid blow-off valves.
$40.41 $44.90
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Precision-machined GFB 33mm hose plug featuring a ribbed outer diameter for secure fitment.
$14.31 $15.90
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GFB 4005 adjustable short shift kit linkage components for 2008-2014 Subaru WRX.
$225.00 $250.00
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GFB 4002 adjustable short shifter linkage assembly with specialized pin removal tool for Subaru 6-speed gearboxes.
$305.10 $339.00
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GFB G-FORCE III digital electronic boost controller head unit with touch-sensitive buttons and LCD display.
$265.50 $295.00
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GFB G-Force and D-Force series replacement wiring harness with multi-pin connectors
$21.51 $23.90
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GFB G-Force 3-port electronic boost control solenoid with two brass hosetail fittings
$113.40 $126.00
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GFB D Boost V2 VNT manual boost controller with knurled adjustment knob and precision needle valve.
$186.75 $207.50
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GFB G-Force III electronic boost controller touchscreen unit with 4-port solenoid and wiring harness.
$445.50 $495.00
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