If you're interested in our Billet Blow-Off Valve Upgrade for your new TurboSystem order, we've got a deal for you! When you place your order, you can replace the standard Hahn RaceCraft Blow-Off Valve in your TurboSystem with this beautiful Billet Blow-Off Valve for only $200...that's right, we will knock $100.00 off the price*! Make sure to select the "Billet Blow-Off Valve Upgrade" option when you order your TurboSystem!