The CURT Helux coil-spring fifth wheel pin box reduces road shock and vibrations through proprietary coil and shock technology, creating a noticeably smoother ride for your cargo and passengers. By absorbing impact forces before they reach the RV frame, the Helux system decreases frame stress by up to 30 percent compared to similar pin box designs.

Built with automotive-grade coil springs, this maintenance-free design needs no air pressure checks or break-in period. The rugged steel construction with black powder coat resists wear and corrosion, and the unit is SAE J2638 tested and approved for Lippert RV frames with Rhino Box bolt-mounting compatibility.

• 18,000 lb gross weight capacity
• Gooseneck coupler with king pin
• Coil spring suspension with integrated shock technology
• 20-3/4″ length × 14-7/8″ width
• 2-row bolt pattern, 7-1/2″ × 2″ spacing
• Steel construction, black powder coated
• Virtually maintenance free