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Grimmspeed V2 Bypass Valve Red 2002-2007 WRX / 2004-2021 STI

SKU 126032RED
Original price $249.00 - Original price $249.00
Original price
$249.00
$249.00 - $249.00
Current price $249.00
Pay Over Time
100 In Stock, Usually Ships within 1-2 Business Days

The long-awaited return of the GrimmSpeed Bypass Valves is here! Our valves have been a highly sought-after product, but due to the intensive assembly process, it has been hard to keep them on the shelves, which in turn causes frustration among our customers. To address this issue, our team has worked diligently to redesign the BPV to make the assembly process more efficient, while also improving its manufacturability, performance, and overall reliability.

What's New for Version 2?

  • Redesigned the internal piston to eliminate the potential failure points we saw in our V1 design.
  • Adjusted tension of the internal spring to better suit the operating environments we've seen after further testing and development.
  • Updated the design of the main body for a better CNC milling finish.
  • Exchanged the internal brass piston from V1 for a lighter weight hard aluminum piston, resulting in better valve response.
  • Removed the inspection port which was primarily used for quality control, but it is not required with the new design.

In testing of stock bypass valves, we saw repeated internal leakage at boost levels as low as 8psi in the FA20 and 19psi in the EJ variant. As always the case with GrimmSpeed Products, we focus on form AND function, and these units are no exception. We aimed to create an extremely durable bypass valve that could hold double the pressure of the stock unit, while still being a stylish part that compliments the other GrimmSpeed Parts under your hood.

QUICK SPECS:

  • CNC-Machined 6061 Aluminum
  • Corrosion resistant anodized finish, available in both red and black
  • Oversized 38mm anodized aluminum piston for superior flow
  • Swivel air fitting to aid in install and for accommodating custom setups
  • No tuning or adjustment required

FITMENT:

  • 2004-21 Subaru STI
  • 2002-07 Subaru WRX
  • 2004-08 Subaru Forester XT (2004-05 FXT require STI-Style TMIC)
  • 2004-06 Subaru Baja XT (requires STI-Style TMIC)

    Customer Reviews

    Based on 4 reviews
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    Y
    Yoder
    Good looking and functional

    Ordered this as soon as it came in. Love how it looks. The bpv also has reduced the peak boost and maintaining normal boost better than stock. When installing make sure to have a pair of locking pliers or another set of hands to put the hose back on bpv. The clip is a real pain otherwise.

    Yoder,

    Thank you for taking the time to leave a 5 Star Review of the Grimmspeed V2 Red Bypass Valve! The aluminum construction, already makes this a superior product to OEM, not needing a tune to install makes this the perfect upgrade for looks and performance! Enjoy!

    Regards,

    K
    Kimberlyn Brockert
    Sounds and looks great

    Waited a long time for this BPV and it was worth it. The only thing I’d recommend is getting a different elbow before hand. I paired mine with a black elbow from IAG and it looks great together.

    Kimberly,

    Thank you for your 5 Star Review of the Grimmspeed Bypass Valve! I am thrilled to hear that you're happy with your purchase and that the valve sounds and looks great on your STI/WRX. Your recommendation to get a different elbow beforehand as the OEM one can get worn out! This BPV is a perfect replacement from OEM and offers and upgraded aluminum housing and brass internals! It out performs OEM without a doubt! I hope you continue to enjoy your upgrade and thank you for choosing Subimods!

    Regards,

    B
    Brandon Jones
    Best sounding bpv

    Sooo this was a long long awaited wait for this since it was always pushed back due to supply issues but I will say this is the best bpv hands down. I did have a go fast bits but wasn't able to get a good tune with it since it was supposedly leaking. Has the flutter and I'm very impressed with it.

    Brandon,

    We appreciate your 5 Star Review! The Grimmspeed Bypass valve is a solid BPV for your WRX/STI! When I say solid the body is CNC machined out of billet 6061 aluminum alloy housing a massive 38mm machined brass piston. Brass was chosen due to the low thermal expansion ensuring your BPV does what it needs to do under the most extreme conditions! The added bonus of it's sound makes this a go to BPV solution!

    Regards,

    P
    Patrick Lydon
    Excellent

    Well built and put together

    Patrick,

    Thank you for the 5 Star Review of the Grimmspeed Bypass Valve Red 2004-2021!

    Regards,

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