Lightweight 4-Stroke Bracket Adjustable, stainless steel outboard motor bracket. Works with 4-Stroke motors up to 15hp or 2-Stroke motors up to 20hp, max weight 132lb. Twist-knob Safety Locks provide increased torque rating while helping secure bracket in place. Built extra-tough and extra-wide for secondary, higher-torque, four-stroke engines. Motor's weight is counterbalanced by heavy-duty stainless steel torsion springs for easy lifting. The 55-0408SS boasts a 2" thick, weatherproof and maintenance-free polypropylene mounting board along with aircraft-type stainless steel hardware. Four-position lock bar and 10" of travel allows for better range of trim adjustment, letting you fine tune motor height for optimal performance. Rated for long or short shaft engines.