Steam STX 63 Turbocharger front

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SteamSpeed STX 63 Turbo for Subaru WRX & STI 8cm² (ported)

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Availability: In stock

Product Code: SS-SUB-STX63-8P
Brand: SteamSpeed Turbochargers

It is well known that upgrading your turbocharger with a larger SteamSpeed STX turbocharger is one of the most cost-effective ways to increase power on your WRX/STI; however, it is less known that sizing the turbocharger to match your performance goals has a huge impact on how well the turbo works with your other mods, how responsive your throttle is, and how fun your car is to drive. The good news is that we make a SteamSpeed STX turbo to fit nearly every goal.

Our SteamSpeed STX 63 turbo is designed specifically for the WRX/STI owner who values a super-responsive stock-like turbo, but also wants the increased power that comes from our STX 11-blade billet compressor wheel, and the unsurpassed top-end flow.  The STX 63 is somewhat larger than the stock turbo, but thanks to our high flowing low-mass turbine wheel, and upgraded STX compressor wheel, the STX 63 can in some cases be even more responsive than the OEM unit, and will make more power across the entire rev range.  Expect significant power gains especially above 5000 RPM with the the STX 63 being able to hold boost until redline.

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STX Standard Features:

  • Billet compressors wheel: featuring Garrett GTX style areo 11-blade wheels custom made from billet 7075 aluminum.
  • Low inertia turbine wheel: standard with 9-blade low inertia turbine wheels.  These turbines weigh 1/3 less than standard wheels significantly increasing the responsiveness, low-end torque, and top-end power.
  • Thrust bearing: CHRA built to last with heavy duty thrust bearings for high boost & power applications.
  • Adjustable Actuator: Adjustable actuator springs are available in our accessories section.

Additional Information

Fitment Subaru WRX/STI
Turbo Inlet Size 2.4"
Cooling System Water & Oil
Bearing Type Journal Bearing
Compressor Wheel 47.1mm/63.4mm
Compressor Housing A/R .60
Turbine Blade Count 9
Turbine Wheel TD05H 49.1mm/55.8mm
Turbine Housing Nozzle Area 8cm² / .55
Actuator Type Billet Forged
Wastegate Springs Preloaded with 1.2 bar (red), Install Kit includes 0.8 bar (green)
Balance Level 100,000 on VSR
Max Flow Rating 45 lbs/min
WHP Rating 300-350 whp
Install Kit Included Yes
Ported Yes

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