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Experience the RV Industry's Most Advanced Pin Box
The CURT Helux™ 5th wheel pin box is a revolutionary towing technology that delivers a 30% reduction in force into the RV frame and body compared to Competitor X pin box. It offers one of the most comfortable experiences for you, your passengers, and your equipment. Approved for use on all Lippert trailer frames, it features an advanced coil spring shock-absorber that resists chucking, jarring, vibrations, and stress at the coupling point.
Award-Winning SEMA Innovation
The CURT Helux coil-spring 5th wheel pin box claimed the prestigious Best New Exterior Accessory award at the 2024 SEMA Show in Las Vegas, NV—one of the biggest stages in the automotive aftermarket. The award is given to the most innovative and groundbreaking products for the upcoming year, and the Helux was recognized for its impact on ride comfort and durability, setting a new standard for 5th wheel accessories.
Performance Perfected
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Increased Comfort
Significantly reduces jerking and jarring over traditional fixed pin boxes
Extended Longevity
Coil spring and shock technology extend life over torsion or air bags
Will Not Void Warranty
Certified and approved on Lippert RV frames — will not void warranty!
More Benefits of Helux
- Proprietary coil and shock technology reduces chucking and jarring to protect trailer and gear
- Reduces force on the RV frame and body by 30% compared to similar pin boxes
- Automotive-grade coil spring provides a more comfortable ride for pets and passengers
- No break-in period — just install it and go
- Virtually maintenance-free design improves user experience over airbags
- Compatible with Rhino Box bolt-mounting pattern
- Robust steel construction and black powder coat finish
- Tested for safety in accordance with SAE J2638
- Made in USA with global materials
- Approved on Lippert RV frames (will not void warranty)
- Limited lifetime warranty (one-year finish, one-year parts)
- Patent pending
Couple Your Way
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5th Wheel to Gooseneck
- Coming soon
- Capacity options up to 20K
- Accepts standard 2-5/16" balls
Traditional King Pin
- Capacity options up to 24K
- Connects to jaw-style 5th wheel hitches
Explore the Complete Lippert Family
How to Select the Right Helux for You
When looking to purchase a Helux pin box, the most important piece of information is finding the Pin Weight of your 5th Wheel. The chart below summarizes the optimal pin weight range for each Helux based on your specific scenario.
| Part Number | Spring Rating (lbs.) | Optimal Pin Weight (*1) | Minimum Pin Weight (*2) | Maximum Pin Weight (*3) |
| 2024044570 | 1,800 | 3,713 - 4,332 | 2,570 | 4,850 |
| 2024044571 | 2,000 | 4,333 - 4,900 | 2,860 | 5,400 |
| 2024044572 | 2,300 | 4,901 - 6,000 | 3,290 | 6,200 |
|
*1 Optimal pin weight value range when choosing a CURT Helux pin box. |
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How to Measure your Pin Weight?
Accurate Method:
The best way to attain the pin weight is to take your 5th wheel to a certified scale (e.g. CAT Scale). For additional information, visit https://catscale.com/how-to-weigh/
Note: Be sure your 5th wheel is fully loaded with everything you would normally have when travelling or camping including ATVs, golf cart, motorcycles, snowmobiles, etc.
- Connect the 5th wheel to the tow vehicle and drive onto the scale; front axle on scale 1, rear axle on scale 2 and the trailer axles on scale 3.
- Note these weights and total the weights from #1 and #2.
- Disconnect the 5th wheel and reweigh just the tow vehicle on scales #1 and #2.
- Note these weights and total the weights from #1 and #2.
- Subtract the weight total in step 4 from the weight total in step 2 to find the actual hitch weight
Approximate Method:
Pin weight can also be approximated by multiplying the GVWR of the 5th wheel by 22% (0.22). This weight result will provide you with approximate pin weight. Your trailer’s GVWR can be found on the trailer VIN label.
Depending on actual trailer weight and load distribution, approximate weight could vary from actual weight. For best results, performing the accurate method above is preferred.
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