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Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs (Part Number: )
Tial MV-R Wastegate 44mm Red w/ All Springs
Read 5 Reviews | 12 Q&As
Part # MVRR
msrp: $436.00

In stock! Ships same day
Universal part

Features & Product Details

RallySport Direct is proud to carry some of the best aftermarket turbocharged components brought toy ou by Tial.

Here, you are looking at the Tial 44mm MVR External Wastegate. The Tial 44 MVR is a very popular choice of external wastegate utilized by some of the world's fastest and powerful turbocharged vehicles. The 44 MVR supersedes the previous Tial V44 in design with new features to achieve your desired boost levels.



  • Water cooling ports (not required to run) for those heavy-duty applications, three bottom pressure ports and two top ports for boost controllers like the AMS-1000.
  • High temp NiCrFe based alloy is used for valve and 347SS valve housing will offer longer product life compared to competing designs.
  • High-temperature silicone Nomex reinforced actuator diaphragm.
  • 17-7 PH Stainless Steel actuator spring gives consistent pressure at high temperature, resist "relaxing" at a temperature to 900F (483C).
  •  Nitronic 60 Stainless Steel is used for the valve seat, and valve bushing.
  • All Stainless Steel hardware.
  • Mating weld flanges are 304L
  • Includes all of the springs so you can tune it to your cars needs without spending money on extra springs
  • Springs come pre-installed from  Tial  so you will want to verify the spring settings before installation
  • Red finish
  •   BAR PSI SPRING COMBINATION 0.3 4.35 Red 0.4 5.80 Blue 0.5 7.25 Green + Red 0.6 8.70 Green + Blue 0.7 10.15 Black + Red 0.8 11.60 Black + Blue 0.9 13.05 Green + Red + Black 1.0 14.50 Green + Blue + Black 1.1 15.95 Yellow + Red + Black 1.2 17.40 Black + Blue + Yellow 1.3 18.85 Plain + White + Blue + Green 1.4 20.30 Plain + Black + Red + Yellow 1.5 21.75 Plain + Black + Blue + Yellow


    Brand: Tial
    Color: Red
    Flange Size: 44mm
    Flange Type: V-Band
    Includes Hardware: Yes
    Includes Spring: Yes, All Springs
    Material: Stainless Steel / Aluminum
    Pressure Rating: 0.3-1.7 bar
    Type: External
    Water Cooled: Yes
    Mfgr. Warranty: Limited Lifetime 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.



    5 Reviews
    5 out of 5 Stars
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Customer Photos and Videos
    No user media. You can upload a photo or video of your install by posting a review.
    Work of art 4 years ago
    5out of 5stars

    This thing is so pretty , that its almost a shame to bury it under the car. great quality part. You can tell its built good, because it is a very heavy/solid piece.
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    Very nice 5 years ago
    5out of 5stars

    Comes on smooth and sounds aggressive once it opens up. Very nice part quality and packaging. Comes with everything you may need and isn't too hard to switch out spring on (easy w/ a vice).
    Was this review helpful?
    1 of 1 people found the following review helpful
    Great 6 years ago
    5out of 5stars

    Having a dom 5 xtr an EWG is a must and in my opinion Tial just does the best job in that regard.
    Was this review helpful?
    Great performance, amazing sound 6 years ago
    5out of 5stars

    I have this setup on my cobb catless up pipe with a invidia n1 race tbe. It make the car feel so much better when on the throttle and coming off. Plus is screams when in boost. After the pro tune I gained 10whp off my stock turbo. Now I know when i enter full boost there is no way boost creep will set in. I love it!
    Was this review helpful?
    Beautiful.... 6 years ago
    5out of 5stars

    This was an amazing product. I disnt even want to put it together. Lol but it does come with everything u need just in case u wanna change spring pressure. P.S.
    Was this review helpful?


    • Q: 2011 sti   2011sti3 years ago

      Will be getting bigger tubro soon would it be okay to run a 44mm on a stock tubro 2011 sti with intake down pipe headers 1000cc feul pump Would like to know witch is best 38 or 44 want to know witch if the 44 would even work for the time being with stock tubro will get pro tune..??
      • 0 of 0 people found the following answer helpful

        A:  The 38mm and 44mm are used for different applications. 38/40mm are good for - High boost - Low compression - Small displacement 44/45mm are good for - Low boost - High compression - Large displacement 38mm wastegates are more than sufficient for most Subaru builds. 44mm wastegates are generally too large and evacuate too much exhaust gas creating lag. The 38mm would be my recommendation.

        Josh P. @ RallySport Direct 3 years ago  
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    • Q: Will this work with Tomei?  Wilk4 years ago

      I have a pair of Tomei equal length headers that came with a proprietary uppipe and I was wondering if this woujld be compatible with my setup, and if not what do you recommend going with for an uppipe?
      • 0 of 0 people found the following answer helpful

        A:  You will want to look into the GrimmSpeed uppipe as they make a 3 bolt uppipe to fit with this header which will allow you to do an external wastegate.

        Kyle A. @ RallySport Direct 4 years ago  
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    • Q: 38mm vs 44mm  2012_STI_Hellaflush5 years ago

      I have a stock 2011 subaru wrx with stock turbo,catback exhaust and I will be doing some modifications to performance on my car but still keeping the stock turbo. Which would be a better choice the 38mm or the 44mm. Thank you!
    • Q: Block off plate?  brandon065 years ago

      Would I need the block off plate to run this properly, or will the dump pipe included with the Grimmspeed up pipe be okay?
      • 1 of 1 people found the following answer helpful

        A:  The dump tube is all you will need to run this properly.

        guest57853c642a8d25b5018c44a7 @
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    • Q: Spring Cracking Pressure  KornShaDoW0975 years ago

      So for each spring combo what would be an estimate cracking pressure? Ex. 10psi or 18.85psi combos.
      • 0 of 0 people found the following answer helpful

        A:  The pressure at which the valve opens is going to be basically determined by your tuner. Whether you run a 10PSI or 12PSI spring setup if your tuner sets you up to run 20PSI then that is when the valve will crack open.

        Tanner S. @ RallySport Direct 5 years ago  
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      • 0 of 0 people found the following answer helpful

        A:  I am the tuner. I want to know what pressure at 0%WGDC the spring will crack open the valve. In other words, if setup for mechanical boost only, when will the spring begin diverting air?

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    This Part Fits

    Universal Product
    This item is non application specific.
    Please verify compatibility before purchase. May require some modification for proper installation.