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Every RV owner knows the frustration of a rough-riding trailer - the constant sway, the jarring impacts from road imperfections, and the white-knuckle driving experience. Standard pin boxes simply transfer every bump directly to your truck's frame. The Curt Helux coil-spring pin box solves these problems with its innovative suspension system that absorbs shocks before they reach your vehicle.
Features
- 18,000 lbs. maximum capacity - Handles even the heaviest 5th wheel trailers with confidence
- 2,950 lbs. pin weight rating - Distributes load evenly for stable towing
- Coil-spring suspension system - Absorbs 30% more road shock than rigid pin boxes
- Durable steel construction - Powder-coated finish resists corrosion from road salt and weather
- Direct bolt-on replacement - Fits most standard 5th wheel kingpin openings
- Maintenance-free design - No greasing required with permanently lubricated bushings
Unlike traditional rigid pin boxes that transfer every road imperfection to your tow vehicle, the Helux's progressive-rate coil springs act as a secondary suspension system. This means less fatigue for both you and your equipment when covering long distances. The system works dynamically - firm enough to prevent excessive movement when cornering, yet compliant enough to soak up potholes and expansion joints.
Professional RV haulers choose Curt's Helux pin box because it dramatically improves the driving experience while reducing wear on both trailer and tow vehicle. The reduced shock transmission means fewer loose components in your trailer's interior and less strain on your truck's suspension components. It's the difference between arriving exhausted after a long haul versus arriving refreshed.
Technical Specifications
- Brand: Curt™
- Model: Helux Coil-Spring 5th Wheel Pin Box
- Capacity: 18,000 lbs.
- Pin Weight: 2,950 lbs.
- Construction: High-strength steel
- Finish: Powder-coated black
- Weight: 0 lbs
- SKU: 2024044567
What's Included
- Curt Helux 5th Wheel Pin Box assembly
- All necessary mounting hardware
- Installation instructions
| Brand | Curt™ |
|---|---|
| Model | Helux Coil-Spring 5th Wheel Pin Box |
| Capacity | 18,000 lbs. |
| Pin weight | 2,950 lbs. |
| Construction | High-strength steel |
| Finish | Powder-coated black |
| Weight (lbs) | 0 |
| Sku | 2024044567 |
- Will this fit my 2018 grand design reflection? Yes, this is a standard replacement pin box that fits most 5th wheel trailers with conventional kingpin openings. Measure your existing pin box opening to confirm compatibility.
- How does the coil-spring system improve towing? The progressive-rate springs absorb road shocks that would normally transfer to your tow vehicle, reducing trailer sway and improving ride quality by up to 30% compared to rigid pin boxes.
- Is professional installation required? While mechanically inclined owners can install it themselves using basic tools, we recommend professional installation to ensure proper alignment and torque specifications.
- What's the warranty coverage? Curt backs this pin box with a 1-year limited warranty against manufacturing defects. Elkhart RV Parts provides additional support for all purchases.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.