Empire Industries Dual full Exhaust system for Yamaha Raptor 700 2006-2023 Tig welded 304 stainless steel construction. Step pipe design for maximum power. 6061 Aluminum silencer with billet end caps makes for easy repacking. Billet silencer end caps are available in anodized blue, black and raw. Can Generation 1 is a round-shaped muffler. Can Generation 2 is an octagon-shaped muffler. No performance difference just the look of the exhaust.