"Mount our Adventure Rear Bumper 16"" to your sled for a stylish and safe ride. This snowmobile Bumper is made of lightweight aluminum and fits the REV Gen5, REV Gen4 137"" and 146"" with short tunnel for the edge you need. Make every adventure a thrilling one. Stunning style that matches the Adventure Front Plate. Constructed with a combination of lightweight extruded and heat treated cast aluminum for strength - like the XC Cast Bumper. Compatible with LinQ Snowboard/Ski Rack. Available in all tunnels lengths and multiple colors."