SKI-DOO HITCH REAR BUMPER FOR SUPER SHORT TUNNEL (154'') - 860203052The Ski Doo Hitch Rear Bumper for Super Short Tunnel 154" is a required frame component for any REV Gen5 Deep Snow rider who wants to tow or run a hitch. Without it, you can't legally or safely hook up to anything, so it's not optional gear. Installation is straightforward and reliable because there's no cutting involved at all. It also stiffens up the tunnel where the hitch stress is concentrated, which matters when you're actually pulling weight.