This replaces the factory head, and improves cooling, and allows you to change your compression on the fly with using different domes. It will work on any year Banshee 1987 - 2006. Will work for standard or big bore (depending on the domes you select). These are similar to those offered by PRO DESIGN, NOSS, VITO's, or MODQUAD. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components".The seller is "minkia38" and is located in this country: US. This item can be shipped worldwide.