CURT Replacement Chevrolet Silverado, GMC Sierra 2500, 3500 HD Puck System 5th Wheel Legs, 25,000 lbs, Hitch Head Required Model 16025CURT Replacement Chevrolet Silverado, GMC Sierra 2500, 3500 HD Puck System 5th Wheel Legs, 25,000 lbs, Hitch Head Required Model 16025 CURT OEM puck system 5th wheel legs allow for faster, easier and more secure installation of your CURT 5th wheel hitch. They utilize the truck bed mounting platform, called the puck system, built into certain pickups today with the towing prep package. Using a set of anchors, the legs quickly and easily drop into the