The leader in performance and style. 3 to 4 inches narrower than competitive brands and combined with the patented Turbo Trac, produces less resistance, improved thrust, and maximum top end speed. The crescent shaped planing surface gives you the quickest hole shot, while reducing cavitation, porpoising, and chine-walk. Designed to fit most Outboards & Sterndrives (including Volvo) from 40HP to unlimited.