Extreme Max Boat Lift Boss Shore Station with Narrow Winch Installation Kit Extreme Max Boat Lift Boss Installation Kit (required for use with Extreme Max Boat Lift Boss 12 Volt & 120 Volt) Fits: Shore Station (Narrow Winch with 4-1/2" Cover, 2500 lb. - 4000 lb. lift) Direct Bolt-On: For Factory OEM Winch