The world's most popular outboard hydraulic system offers smooth, super-efficient steering for today's high performance hulls with single or multiple outboards up to 700 HP combined. Suitable for speeds up to 60 MPH. Patented steering lock valves. Low friction hydraulic steering system. 5 turns from lock-to-lock. Packaged complete with SeaStar Tilt Helm, SeaStar Pivot Cylinder, (2) Hydraulic Oil (1 Liter). Standard 3/4" tapered steering shaft. Fast, easy installation. Meets A.B.Y.C. standards. Meets N.M.M.A. certification requirements. Order wheel and hoses separately.