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and lightweight GR5 titanium construction
Reduces the horizontal movement of the shifter from nearly 1-inch down to 0
the S-FLO Carbon Lid floats effectively against harsh engine movement
Reduces trailing arm movement under acceleration and braking loads
GrimmSpeed V2 Bypass Valve - Red - 2004-2021 Subaru STI / 2002-2007 WRX PDM_brand-merchandise and lightweight GR5 titanium constructionGrimmSpeed V2 Bypass Valve (Red) , 2004 2021 Subaru STI 2002 2007 WRX The GrimmSpeed V2 Bypass Valve in red for the 2004 2021 Subaru STI 2002 2007 WRX replaces the factory recirculating bypass valve with a performance unit that provides more consistent venting of boost pressure during throttle lift events. The factory bypass valve is adequate at stock boost levels but can become a limitation , or fail , as boost pressure increases with modifications.