Set Your Subaru WRX STI Catalog
A down arrow

GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for Subaru WRX STI

General Representation
General Image (Actual Part May Vary)
Select an Application For Your
Subaru WRX STI
 
Year Range
Door Config  [Trim Level]
Application / Notes
2004 to 2014
All [All]
(Black)
2004 to 2014
All [All]
(Red)
2015 to 2021
Sedan [All]
(Black)
2015 to 2021
Sedan [All]
(Red)
 
 
 
[Out of Stock]
(shipping rates shown in cart)
🔰 Subaru WRX STI Fitment Help
Quicker Navigation & Better Info
Set Your Car Once & Site Customizes For It

CARB Compliance / Exemption Warning: If you live in California and your application for this product is not CARB Compliant / Exempt, then you cannot purchase it for public highway or street use (in that case it could only be used for formally sanctioned race use on a racing vehicle that may never be used on a public highway or street). If your application is not CARB Compliant / Exempt and you're shipping to California, our system will let you know on the final checkout page.

These valves are designed to be recirculating. They can be vented to atmosphere, but will require a custom non-MAF tune and modification of the return line.

Also known as a Bypass Valve (BPV), the GrimmSpeed Recirculating Blow Off Valve allows you to have the sound and performance you love about a vent to air BOV while keeping the driveability and economy of a recirculating BOV.

A bypass valve is an important piece of any turbo system. When you begin to increase boost or increase power to the engine, the stock valve begins to stress. GrimmSpeed tackles this by introducing their upgraded bypass valves. Built to operate even under the most stressful conditions, each valve is made of CNC machined 6061 aluminum and anodized in black or red for durability and longevity. The oversized 38mm brass piston allows for more air to bypass quickly and efficiently. Due to the way they are constructed, they do not require any tuning and can be used on a stock or tuned engine. The swivel air fitting makes this a simple install on any build.

Key Features:
  • Eliminates boost leaks often found when using OEM bypass valves.
  • Solid CNC machined 6061 construction with corrosion resistant red or black anodized finish.
  • Oversized 38mm brass piston for increased flow and quick actuation.
  • The piston has a O-ring to eliminate any boost leaks seen in cheaper options.
  • Precision tuned steel spring for a long operating life.
  • Swivel air fitting to aid in install and for accommodating custom setups.
  • No tuning or adjustments required!

 Narrow Down Selections By Your Subaru WRX STI's Year
Application
(Clicking a link will change you to the given Subaru WRX STI's year catalog)
Starting @
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2021 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2020 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2019 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2018 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2017 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2016 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2015 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2014 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2013 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2012 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2011 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2010 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2009 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2008 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2007 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2006 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2005 Subaru WRX STI
$229.00
GrimmSpeed Recirculating Blow Off Valve (BOV) / Bypass Valve (BPV) for 2004 Subaru WRX STI
$229.00

  Don't have a Subaru WRX STI?

Our Customers Love Us - See our Reviews
...Loading Reviews