Tomioka GTX2971 BB Twin Scroll Turbocharger - 500HP | Multiple Subaru Fitments (TR-TS1047)

Tomioka Racing
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GTX2971 Twin Scroll Turbocharger for WRX/STi by Tomioka Racing

Introducing the twin scroll GTX2971 for Subaru 02-07 WRX and 04-21 STI! Just like the GTX2971R,this twin scroll edition features a ball-bearing cartridge, billet compressor wheel , and 10cm^2 housing.

Thanks to the billet compressor wheel the overall weight of the wheel is lighter than competing turbochargers and allows for maximum air ow throughout the unit with the help of point milling on each blade. A unique wheel and blade design, featuring a 20% larger wheel with 17% longer blades than the factory turbocharger.

In addition, the GTX2971 features a port and polished exhaust housing to minimize exhaust flow turbulence. All hardware is included with purchase.


  • Ball-Bearing Design
  • Lightweight Compressor Wheel w/ Point-Milled Blades
  • 20% Larger Wheel w/ 17% Longer Blades
  • Port and Polished Exhaust Housing
  • Supports up to 500 Horse Power
  • Includes Gaskets and Hardware


  • Flange Type: Standard Subaru 5-Bolts
  • Compressor Wheel: 54mm In/72mm Ex
  • Turbine Wheel: 60mm In/57mm Ex
  • Actuator: 1.3 Bar (19psi)
  • Turbine Housing: 10cm^2


  • 2002 - 2007 Subaru Impreza WRX*
  • 2004 - 2014 Subaru Impreza WRX STi*
  • 2015 - 2021 Subaru WRX STI*
  • *Requires Twin Scroll Headers and Downpipe*


  • Increased Power
  • Strong Throttle Response
  • Quicker Spool Times
  • Durable and Long Lasting

What's In The Box?

  • 1 - GTX2971 Twin Scroll Turbocharger
  • All Necessary Hardware
  • Instructions/Manuals (if applicable)
  • Warranty Information



Tomioka Racing Limited Warranty

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