- Already have a Worx Yamaha Intercooler but want to upgrade to a 50mm Blow Off Valve with V Clamp? This little adaptor's the perfect choice for you, use all your original Worx Intercooler Connections and attach this to your intercooler for a fast upgrade to any 50mm V Clamp Style Blow Off Valve. - - - - If you've already got a TIAL style 50mm blow off valve but want to purchase an intercooler, take a look at our complete intercooler and adaptor kit here: -