Injection molded process provides smooth surface, better definition, a perfect fit and easier installation. For assertive riders who demand the utmost protection. Smooth bottom surface to reduce drag. 4 mm thick high impact resistance polypropylene for durability. Extra wide, covers vital primary clutch, chaincase and front heat exchanger components to provide maximum underbelly protection. Attachment kit included. Chassis is premarked for easy installation. - REV Gen4 (Wide) 16" & 20" (except Expedition SWT, Skandic and Tundra)