View our Specials! Coupon Code: SaveIn2026
Looking to upgrade or modify your Subaru WRX STI with aftermarket parts from Go Fast Bits? At Tunersports.com we carry a great selection of their parts for your vehicle.
From drivetrain, blow off valves, forced induction or wastegate actuators we have 10 parts available for your WRX STI, all with free shipping to the Continental US 48 States.
For more information on Go Fast Bits, you can visit the official Go Fast Bits website.
 IN STOCK - LOW Go Fast Bits WGA Wastegate Actuators 7305GFB 99-21 Subaru WRX STI WGA Wastegate Actuator (Tune Required) $209.25
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 IN STOCK Go Fast Bits Mach 2 BOV Kits T9103GFB Mach 2 TMS Recirculating Diverter Valve - Subaru 01-07 WRX / 02+ STi / 05-08 XT Forester $198.90
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 IN STOCK Go Fast Bits Pulley Kits 2014GFB 08+ WRX/STi / 09+ Forester / 03-09 LGT 3 pc Underdrive/Non-Underdrive Pulley Kit $342.81
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 IN STOCK Go Fast Bits TMS Blow Off Valves T9203GFB HYBRID TMS Dual Port 01-07 Subaru WRX / 05-08 Forester XT $234.81
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 OUT OF STOCK Go Fast Bits Short Throw Shifters 4202GFB 4003 Short Shifter Upgrade Kit - makes 4003 into 4002 $111.75
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 $220.50
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 $168.30
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 IN STOCK Go Fast Bits Deceptor Blow Off Valves T9503GFB 02-07 WRX / 04-10 STI Deceptor Pro Blow Off Valve Kit $472.68
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 $320.85
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$320.85
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IN STOCK Go Fast Bits TMS Blow Off Valves T9203GFB HYBRID TMS Dual Port 01-07 Subaru WRX / 05-08 Forester XT $234.81
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IN STOCK Go Fast Bits Deceptor Blow Off Valves T9503GFB 02-07 WRX / 04-10 STI Deceptor Pro Blow Off Valve Kit $472.68
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IN STOCK Go Fast Bits Pulley Kits 2014GFB 08+ WRX/STi / 09+ Forester / 03-09 LGT 3 pc Underdrive/Non-Underdrive Pulley Kit $342.81
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IN STOCK Go Fast Bits Mach 2 BOV Kits T9103GFB Mach 2 TMS Recirculating Diverter Valve - Subaru 01-07 WRX / 02+ STi / 05-08 XT Forester $198.90
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IN STOCK - LOW Go Fast Bits WGA Wastegate Actuators 7305GFB 99-21 Subaru WRX STI WGA Wastegate Actuator (Tune Required) $209.25
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