On orders over $100
100% Money Back on Select Parts
Product images
Product Media
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo (Part Number: )
Tomei ARMS MX8265 Turbo
Subaru Models (inc. 2002-2007 WRX / 2004+ STI)
Write a Review | 4 Q&As
Part # TB401A-SB01C
msrp: $1,580.00

In stock! Ships same day

Features & Product Details

RallySport Direct is proud to provide you with more quality turbocharger options brought to you by Tomei. 

On this page, you are looking at the Tomei ARMS MX8265 Single Scroll Turbocharger. This is Tomei's latest design that features a new CNC billet compressor wheel.

Here are the key features:

  • Billet design is a major improvement over traditional cast compressor wheel
  • Machined from aerospace grade materials
  • Thinner blades with a larger surface area for improved airflow and turbo spool
  • Multi-Rate Billet Actuator
  • Large capacity
  • Reinforced forged billet construction
  • Includes 6 springs for fine boost adjustment
  • Swivel-type nipple allows more room for routing hoses
  • Supports up to 450 HP
  • Additional info:

  • Journal bearing
  • Compressor wheel inducer: 54.8mm
  • Compressor wheel exducer: 76.2mm
  • Compressor wheel trim: 52
  • Compressor wheel blades: 6
  • Compressor housing inducer: 55.8mm
  • Compressor housing exducer: 41.5mm
  • Compressor housing A/R: 0.78mm
  • Turbine wheel exducer: 58.8mm
  • Turbine wheel inducer: 67.0mm
  • Turbine wheel trim: 77
  • Turbine wheel blades: 11
  • Turbine housing inducer: 45.0mm
  • Turbine housing exducer: EJ
  • Turbine housing A/R: 0.57mm
  • NOTE: A silicone inlet hose is needed when using this turbo as the inlet is slightly larger than stock.



    Brand: Tomei
    Bearing Type: Journal Bearing
    Cartridge: Tomei
    Fitment: OEM Upgrade
    Gaskets Included: Yes
    Inlet Size: Non OEM
    Oil Line Included: Yes
    Rated Horsepower: 450hp
    Scroll: Single
    Wastegate: Internal
    Mfgr. Warranty: No Warranty
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days

    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



    Be the first to write a review


    • Q: Boost  22_STI_Tbriggs2 months ago

      on a 2019 STI, what modifications would be needed in order to put this turbo in so that i dont blow the engine?
    • Q: Spool time  Hauffyssti4 months ago

      Can’t seem to find any videos of this on either platform (2.0/2.5) is it closer to a 30r or an old slow 20g? Picked one up for a steal but not loving the reviews on forums...
      • 0 of 0 people found the following answer helpful

        A:  I haven't seen many reviews/videos on this with it being a new-ish redesign, but the spool would be roughly between a 20G and 30R, depending on your supporting mods.

        Marcus E. @ RallySport Direct 1 month ago  
        Was this answer helpful?
    • Q: 2004 WRX usdm  T-Bone1 year ago

      Do I have to delete TGVs in order to install this turbo?

    This Part Fits