Pro Design Billet Cool Head with 22cc Domes. Billet aluminum/CNC cylinder heads are available for many high performance applications. These state-of-the-art heads have replaceable combustion chambers for easy tuning, or custom order for your application altitude, port timing, and fuel, ect. Up to 70% better cooling, increased reliability and CAD assisted designed combustion chambers insure maximum performance. Fits Yamaha Banshee 350 All Years.ATV Galaxy is an authorized Pro Design dealer located in Irvine California. The item "Pro Design Cool Head and Billet 22CC 22 CC Domes Kit Yamaha Banshee 350" is in sale since Monday, December 5, 2011. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "atvgalaxy" and is located in Irvine, California. This item can be shipped worldwide.