The CURT Helux air-ride pin box minimizes road shock and vibrations through proprietary coil-spring technology, delivering a substantially smoother ride for your RV and its contents. Compared to conventional pin boxes, it reduces vertical loading on your frame by approximately 30 percent, lessening stress on the structure and suspension.

Built for durability with minimal upkeep. The automotive-grade coil spring provides reliable performance without requiring airbag refills or extended break-in periods. Heavy-duty steel construction with black powder-coat finish withstands corrosion and road wear. SAE J2638 certified and compatible with Lippert RV frame systems, it uses the Rhino Box bolt-mounting pattern for easy installation. Proudly manufactured in the USA.

• 24,000 lb gross weight capacity
• Air-ride with coil-spring suspension
• Gooseneck coupler configuration
• Dimensions: 20-3/4 in length, 14-7/8 in width
• King pin included
• Black powder-coated steel construction