First Introduced in 2013. The Gooseneck Tri Sport is at the helm of the Charmac Motorsport trailer fleet. Gaining additional net space over a bumper pull, and increased stability and weight distribution while towing, the Gooseneck Tri Sport is the perfect trailer for sledding in the backcountry, heading to the dunes with your side by sides, or to the track with your dragster. For our 3rd generation Gooseneck Tri Sport, we have worked to build the ultimate snowmobile trailer that fits the needs of even the most extreme backcountry sledders.