CURT A25 Sliding 5th Wheel Hitch, 25,000 lbs, Fits Select Silverado, Sierra Puck System Model 16059CURT A25 Sliding 5th Wheel Hitch, 25,000 lbs, Fits Select Silverado, Sierra Puck System Model 16059 The CURT A25 5th wheel hitch offers smoother, quieter towing for your home away from home, combining the patented technology of our A series, an easier mounting system and the power of a 25K 5th wheel hitch. This 5th wheel hitch uses a patented cast yoke to allow for unimpeded head movement, while providing exceptional stability for the trailer. The