CURT A20 5th Wheel Slider Hitch, 20,000 lbs, Select Chevy Silverado, GMC Sierra 2500, 3500 HD, 6.5-Foot Bed Puck System Model 16698CURT A20 5th Wheel Slider Hitch, 20,000 lbs, Select Chevy Silverado, GMC Sierra 2500, 3500 HD, 6. 5 Foot Bed Puck System Model 16698 The CURT A20 5th wheel hitch uses a patented cast yoke to allow for unimpeded head movement, while providing exceptional stability for the trailer. The yoke has a set of poly torsion inserts to suppress shock loads and reduce excessive noise, and the head features high strength, interlocking jaws to give the trailer