Tial Blow Off Valve 6 psi Spring Red, 1.34" Return Fitting, SS Mounting Flange

QR is the more compact recirculating BOV. Optional 1.0" (Subaru) 1.29" (GTR) or 1.34" (DSM/EVO) reciruclation port, uses the standard TiAL V-band flange and can be converted into a standard Q BOV by swapping the bottom piece.