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Tomioka Racing GTX2971 Twin Scroll for Subaru WRX 02-07 and STi 04-18

Tomioka Racing


Introducing the twin scroll GTX2971 for Subaru 02-07 WRX and 04-18 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. For maximum performance from the GTX2971 Twin Scroll, it is recommended to pair the turbocharger with a Catless or Catted J-pipe and Turbo Inlet Hose. All hardware is included with purchase.

NOTE: This turbocharger requires the usage of twin scroll headers and downpipe.

Bearing Type:


Flange Type:

Standard Subaru 5-Bolts

Compressor Wheel: In: 54 mm
Ex: 72 mm

Turbine Wheel:

In: 60 mm
Ex: 57 mm

Turbine Housing:



1.3 bar / 19 psi


500 HP

Kit Contents
• Turbocharger
• Gaskets
• Actuator
• Oil Pipe
• Water Pipe
• Hardware Kits

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