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GrimmSpeed Black V2 Bypass Valve 2015-2021 WRX
5.0 / 5.0
6 Reviews
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full detailsGrimmSpeed Red V2 Bypass Valve 2002-2007 WRX / 2004-2021 STI
5.0 / 5.0
6 Reviews
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full detailsPerrin Red Bypass Valve 2015-2021 WRX
Add horsepower, quicker response, and reliability with the PERRIN BOV/BPV. A must-have replacement for the leaky, slow responding, and plastic OEM...
View full detailsPerrin Red Recirculating Blow Off Valve 2002-2007 WRX / 2004-2021 STI
Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick with the PERRIN BOV/BPV. HIGH FLOW With large 1.225" inle...
View full detailsGrimmSpeed Red V2 Bypass Valve 2008-2014 WRX
5.0 / 5.0
6 Reviews
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full detailsPerrin Black Recirculating Blow Off Valve 2002-2007 WRX / 2004-2021 STI
Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick with the PERRIN BOV/BPV. HIGH FLOW With large 1.225" inle...
View full detailsGrimmSpeed Red V2 Bypass Valve 2015-2021 WRX
5.0 / 5.0
6 Reviews
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full detailsGrimmSpeed Black V2 Bypass Valve 2002-2007 WRX / 2004-2021 STI
5.0 / 5.0
6 Reviews
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full detailsGrimmSpeed Black V2 Bypass Valve 2008-2014 WRX
5.0 / 5.0
6 Reviews
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full details