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Blow-Off Valves / Bypass Valves
Turbosmart SmartPort Dual Port Blow-Off Valve Subaru 2015+ WRX
Turbosmart's latest Type 5 Dual Port BOV made specifically for the 2015 WRX features the innovative new Smart Port drive-by-wire-friendly staging technology that gives you the response of a plumb-back...
Turbosmart Kompact bypass valve 2008-2014 WRX
The Turbosmart Kompact bypass valve offers great performance and higher versatility than the OEM valve at a more affordable price. The Turbosmart Kompact valve is designed as a direct replacement...
TurboSmart Dual-Port BOV 2002-2007 WRX/STI, 2008-2014 STI
Easy to install and setup, the Subaru Dual Port features sequential ports for quiet operation on mild boost and full performance at full boost. Polished aluminum body, blue or black...
TurboXS RFL 2002-2007 WRX, STI, 2004+ STI
The TurboXS RFL blow-off valve is our loudest and best-selling BOV. RFL stands for "Really ... Loud." This valve uses a special acoustic horn to focus the sound of the...
TurboXS RFL 2008-2014 WRX
The TurboXS RFL blow-off valve is our loudest and best-selling BOV. RFL stands for "Really ... Loud." This valve uses a special acoustic horn to focus the sound of the...
TurboXS Hybrid BOV 2002-07 WRX & 2004-2017 STI
Love that blow-off-valve air-whooshing sound, but hate the compromises in driveability that come with a full atmospheric BOV? What to do? TurboXS offers their answer to that age-old conundrum. The...
TurboXS Hybrid BOV 2008-2014 WRX
Love that blow-off-valve air-whooshing sound, but hate the compromises in driveability that come with a full atmospheric BOV? What to do? TurboXS offers their answer to that age-old conundrum. The...
TurboXS RBV Bypass Valve 2002-2007 WRX/STI, 2008-2014 STI
This bypass valve is designed as a higher-performance direct bolt-on replacement for the stock Subaru bypass valve. It is solidly built from CNC-machined aluminum and brass, and is adustable for...
TurboXS RBV Bypass Valve 2008-2014 WRX/2005-2009 Legacy GT
This valve is designed as a higher-performance direct bolt-on replacement for the stock Subaru bypass valve. It is solidly built from CNC-machined aluminum and brass, and is adjustable for spring...
COBB Subaru XLE BPV 2002-2007 WRX, 2004+ STI, 2006-2008 Forester XT
A compact and very lightweight bypass valve that is loaded with features, can be configured in different vent modes, has spring pre-load adjustability, and reliably holds high levels of boost...
Perrin Recirculating BOV 2002-2007 WRX/STI, 2008-2014 STI
With large 1.225" inlets and outlets, the Perrin blow-off valve is sized perfectly to relieve any amount of boost pressure without fear of compressor surge. Don’t be fooled by giant oversized...
Subaru OEM Compressor Bypass Valve 2002-2005 WRX
This is the original Subaru compressor bypass valve that vents air from the intercooler bank to the intake when you release the throttle. For all 2.0 turbo WRX models 2002-05....
Subaru OEM Compressor Bypass Valve (CBV or BOV) Gasket 2002-2007 WRX and STI, 2008-2014 STI.
This gasket goes between the intercooler and the stock compressor bypass valve (CBV). Fits 02-07 WRX and STI, and 2008-2014 STI.
CBV Gasket 2008-2014 WRX
This is the stock O-ring style gasket for the compressor bypass valve (CBV, or if you prefer, BOV). Fits all 2008-2014 WRX, 2005-2009 Legacy GT/Outback XT, and 2009-2013 Forester XT....
Subaru Compressor Bypass Valve (CBV) Return Hose 2002-2007 WRX/2004+ STI
This hose is the return line from the compressor bypass valve (otherwise known as a blow-off valve) back to the turbo inlet. It's 99081 in the diagram. Includes hose and...
TurboXS BOV adapter kit
Need a spare adapter kit? Fits all 2002-07 WRX and 2002+ STI (including 2008+).
GrimmSpeed Compressor Bypass Valve (CBV or BOV) Gasket 2002-2007 WRX and STI, 2008-2014 STI.
This gasket goes between the intercooler and the stock compressor bypass valve (CBV). The Grimmspeed gasket is more than three times the thickness of the factory item. Fits 2002-2007 WRX...
Subaru STi OEM Compressor Bypass Valve 2002-2007 WRX/2004+ STi
This is the original Subaru STi compressor bypass valve. (The compressor bypass valve, also known as a "blow off valve," releases compressed charge air when you back off the throttle.)....
COBB Subaru XLE BPV 2008-2014 WRX, 2005-2009 Legacy GT/Outback XT, 2009-2013 Forester XT
The COBB XLE BPV is a compact and lightweight by-pass valve that is capable of holding very high boost pressure without leaking. Its unique design allows for extremely fast venting...
Subaru Compressor Bypass Valve (CBV) Return Hose 2008-2014 WRX
This hose is the return line from the compressor bypass valve (otherwise known as a blow-off valve) back to the turbo inlet. Kit includes the hose, two clamps, and one...
Subaru Compressor Bypass Gasket 2015+ WRX
This is the stock O-ring style gasket for the compressor bypass valve (CBV, or if you prefer, BOV) on the 2015+ Subaru WRX and other cars with the turbo FA20...
TurboXS RFL Type XS Blow-Off Valve Subaru 2015+ WRX
Designed in the same vein as all of the TurboXS "RFL" blow off valves, the W15-XS-RFL is Really F'n Loud. Designed specifically for the 2015+ WRX using the all-new "XS" BOV platform, this valve is...
Subaru OEM Compressor Bypass Valve Bolts 2002-2007 WRX/2004+ STi
These are original Subaru bolts to hold the compressor bypass valve onto the intercooler. (The compressor bypass valve, also known as a "blow off valve," releases compressed charge air when...
Cobb Bypass Valve Rebuild Kit
This BPV Rebuild Kit is a package of hardware and o-rings required to completely rebuild the current COBB XLE Bypass valve. New o-rings, assembly lube,hardware and tools give you everything...
IAG Replacement BOV Elbow 2002-2007 WRX/2004+ STI
The stock Subaru compressor bypass valve has a cast elbow part bolted to it that is not available separately. (The compressor bypass valve, also known as a "blow off valve,"...
TurboXS Type XSL 2002-2007 WRX / 2004 + STI
The TurboXS RFL blow-off valve is our loudest and best-selling BOV. RFL stands for "Really ... Loud." This valve uses a special acoustic horn to focus the sound of the...
Cobb LF Bypass Valve 2002-2007 WRX/2004+ STI
The Cobb LF BPV features a piston o-ring seal that is twice the diameter of the old XLE design allowing more seal compression and reduced wear. Not only is this...
COBB LF BPV 2015+ WRX
The Cobb LF BPV features a piston o-ring seal that is twice the diameter of the old XLE design allowing more seal compression and reduced wear. Not only is this...
COBB LF BPV 2008-2014 WRX
The Cobb LF BPV features a piston o-ring seal that is twice the diameter of the old XLE design allowing more seal compression and reduced wear. Not only is this...
Subaru OEM Compressor Bypass Valve 2008-2014 WRX
This is an OEM Subaru compressor bypass valve, otherwise known as a blow-off valve. Is your car not making the boost that it should? A defective CBV might be the culprit. Comes...
Subaru OEM Compressor Bypass Valve 2005-2009 Legacy GT
This is an OEM Subaru compressor bypass valve, otherwise known as a blow-off valve. Is your car not making the boost that it should? A defective CBV might be the culprit. Comes...
PERRIN Recirculating BOV 2008-2014 WRX
Inefficient factory blow off valves (BOV) can hinder boost response during shifts and can damage your expensive turbo charger. PERRIN offers several choices for owners to choose the best solution...
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