Ultra 35946203 TrailAir L05 Air Ride Fifth Wheel King Pin Box 21K

The Ultra-Fab TrailAir 35-946203 is an air ride fifth wheel king pin box designed to dramatically improve towing comfort and stability. This innovative pin box replaces standard Lippert 1621 pin boxes and features a unique scissor-action air spring suspension system that acts as a buffer between your tow vehicle and fifth wheel trailer.

Key Features:

• 21,000 lb gross vehicle weight capacity for heavy-duty towing
• Air spring suspension with integrated shock absorber reduces road impact transfer
• Unique scissor action design cushions the hitch area and protects your trailer
• Eliminates the "diving board" effect caused by rigid hitch connections
• Direct replacement for Lippert 1621 pin boxes
• Two-row bolt pattern for secure installation with existing hardware
• Measures 41.763 inches in length by 11-7/8 inches in width
• Black powder-coated steel construction for durability

Traditional rigid fifth wheel hitches cause trucks and trailers to fight each other at highway speeds, especially on rough roads. The TrailAir's air spring absorbs these forces while the shock absorber handles rebound, resulting in a smoother ride for both the truck occupants and trailer contents. This system significantly reduces bumps, chucks, and jars during towing, improving handling and enhancing overall towing performance while protecting your investment.