TurbosmartÕs Type 5 SmartPort Upgrade Kit is the perfect solution for upgrading your existing Type 5 blow off valve to Turbosmart's latest and most advanced SmartPort spec. This kit comes with a 50mm black anodized SmartPort Trumpet and a Red -17 to -14 inHg spring, making it easy to upgrade your BOV with Turbosmart's latest technology. With TurbosmartÕs Type 5 SmartPort Upgrade Kit, you can enjoy improved response and performance, ensuring maximum efficiency for your vehicle. Get the best out of your Type 5 BOV with TurbosmartÕs easy-to-install upgrade kit!