The CURT Air Ride Pin Box allows you to tow and ride comfortably with its shock absorption technology that keeps you calm, collected, and cushioned. Bumps in the road are inevitable, but they can be a lot less stressful with the CURT Air Ride 5th Wheel Pin Box. With an internal air bag and built-in strut that absorbs road shock and vibration, the Air Ride provides a smooth ride that limits strain on your truck and trailer by reducing chucking, jarring, and bouncing. The Air Ride is engineered to handle the rigors of the road. It's built to move in a scissor-like motion that allows the pin box to compress vertically, absorbing road shock and vibration which provides cushion for a smoother ride. Its built-in shock protects the air bag from destruction by recoiling the pin box and handling the rebound or bounce effect, then positions the pin box to be ready for the next bump or impact. The CURT Air Ride 5th Wheel Pin Box serves as a guard between the tow vehicle and RV, suspending the impact of road shock and stabilizing the towing performance. Towing 21, 000 lbs. never felt so good. The Air Ride is designed to replace Lippert 1116 5th wheel pin boxes and has a 21, 000-lb. gross trailer weight (GTW). It comes ready to install and uses the same bolts as the original pin box, so it doesn't require any additional hardware for installation. Constructed with high-strength steel and finished with a black powder coating, the Air Ride is the ultimate 5th wheel pin box to tackle your towing needs for the road ahead.• Replaces Lippert 1116 medium jaw 5th wheel pin boxes• Reduces chucking, bouncing, and jarring• Internal air bag and built-in strut that absorbs road shock and vibration• Bolt-on installation with no assembly required• Steel construction and black powder-coat finish that protect against rust• 21, 000-lb. towing capacity• Made in the USA Designed to replace Lippert 1116 medium jaw 5th wheel pin boxes 21, 000-lb. gross trailer weight (GTW) High-strength steel finished with a black powder coating | Curt M19 Air Ride Pin Box, 21,000 lbs in Black Made in USA