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Experience the RV Industry's Most Advanced Pin Box
The CURT Helux™ 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. Now available in both gooseneck and 5th wheel configurations, with multiple pin-weight options and gross-towing capacities to fit a wide range of RVs.
Performance Perfected
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Long-lasting durability
Reduces force on the RV frame and body by 30% compared to similar pin boxes
Smooth, comfortable ride
Automotive-grade coil spring provides a more comfortable ride for pets and passengers.
Will Not Void Warranty
Certified and approved on Lippert RV frames — will not void warranty!
What Makes Helux Better Than the Rest
Helux Gooseneck Pin Box
- Allows for additional cargo space in the bed of your truck versus traditional 5th wheel towing
- 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
- Auto-latching coupler accepts standard 2-5/16” gooseneck ball
- 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
Helux 5th Wheel Pin Box
- 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
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.
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.
Helux Gooseneck Pin Boxes
| Part Number | Spring Rating (lbs.) | Optimal Pin Weight (*1) | Minimum Pin Weight (*2) | Maximum Pin Weight (*3) | Connection Type |
| 2024044575 | 1,100 | 1,650 - 2,144 | 1,350 | 2,350 | Gooseneck |
| 2024044574 | 1,250 | 2,145 - 2,484 | 1,550 | 2,700 | Gooseneck |
| 2024044576 | 1,500 | 2,485 - 2,954 | 1,800 | 3,200 | Gooseneck |
| 2024044577 | 1,800 | 2,955 - 3,469 | 2,200 | 3,900 | Gooseneck |
| 2024044578 | 2,000 | 3,470 - 3,964 | 2,450 | 4,300 | Gooseneck |
| 2024044579 | 2,300 | 3,965 - 5,000 | 2,800 | 5,000 | Gooseneck |
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*1 Optimal pin weight value range when choosing a CURT Helux pin box. |
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Helux 5th Wheel Pin Boxes
| Part Number | Spring Rating (lbs.) | Optimal Pin Weight (*1) | Minimum Pin Weight (*2) | Maximum Pin Weight (*3) | Connection Type |
| 2024044568 | 1,100 | 1,880 - 2,377 | 1,200 | 2,600 | 5th wheel |
| 2024044567 | 1,250 | 2,378 - 2,722 | 1,360 | 2,950 | 5th wheel |
| 2024044569 | 1,500 | 2,723 - 3,165 | 1,610 | 3,500 | 5th wheel |
| 2024122233 | 1,500 | 3,166 - 3,712 | 2,120 | 4,000 | 5th wheel |
| 2024044570 | 1,800 | 3,713 - 4,332 | 2,570 | 4,850 | 5th wheel |
| 2024044571 | 2,000 | 4,333 - 4,900 | 2,860 | 5,400 | 5th wheel |
| 2024044572 | 2,300 | 4,901 - 6,000 | 3,290 | 6,000 | 5th wheel |
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*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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