The WP Series features heavy-gauge steel throughout the chassis, side panels and power unit cover. Crowns robust drive unit has a powerful AC motor, cast iron gear box, helical gearing and taper bearings that absorb shock to secure it in place. A cast aluminum handle with structural webbing provides maximum strength and lasting durability while operating in tight spaces. The Crown forks feature a C channel design using heavy-gauge 516 steel and boxed-in fork tips to ensure strength and long life. The WP Series improves under-clearance by 30 percent for reduced wear in the trucks undercarriage, which means longer life and fewer repairs. Replaceable steel wear blocks reduce operating costs and extend truck life. Only Crown has the confidence to include a Five-Year Power Unit and Fork Weldment Guarantee.