---
- IMPROVES RIDE – The Rota-Flex boasts a pivoting head that moves and controls back and forth movement of the king pin within the hitch which significantly reduces chucking and provides a smoother ride
- SHOCK ABSORPTION TECHNOLOGY – To minimize strain and reduce wear and tear on the trailer, the Rota-Flex contains a robust rubber compound in its head that absorbs the road shock, bumps, and vibrations experienced on rugged terrain
- SIMPLE INSTALLATION – The Rota-Flex is ready to be installed as soon as it comes out of the box. It uses the same bolts as the original pin box, so no additional hardware is needed for installation
- BUILT TO LAST – Constructed with steel and a black powder coat finish that protects against rust, the Rota-Flex is extremely long-lasting to ensure peaceful towing day after day
- SPECIALLY DESIGNED – The Rota-Flex is specifically configured to replace Lippert 1621 or 1621HD 5th wheel pin boxes with a towing capacity of 18,000 lbs.
Take Control of your ride with the CURT® Rota-Flex™ 5th wheel pin box! The Rota-Flex boasts a pivoting head that moves and controls back and forth movement of the king pin within the hitch which significantly reduces chucking. It also contains a robust rubber compound in its head that absorbs road shock, resulting in less strain and reduced wear and tear on your trailer as you travel. All roads lead to some kind of destination, and this road leads straight to a smoother ride. Upgrade today and leave rough rides behind!
Towing 18,000 lbs. never felt so good! The Rota-Flex is designed to replace Lippert 1621 or 1621HD pin boxes and has an 18,000 lb. gross trailer weight (GTW). It comes ready to install and uses the same bolts as the original pin box, so it doesn’t require any additional hardware for installation. Constructed with high-strength steel and finished with a black powder coating, the Rota-Flex is the ultimate 5th wheel pin box to tackle your towing needs for the road ahead.
- Replaces Lippert 1621 or 1621HD 5th wheel pin boxes
- Reduces chucking and absorbs road shock
- Long jaw with pivoting head
- Bolt-on installation with no assembly required
- Constructed with steel and a black powder coat finish that protects against rust
- Powder-coated lower jaw
- 18,000-lb. towing capacity
- Made in the USA
| Finish | Black powder coat |
|---|---|
| Material | Steel |
| Replaces model | Lippert 1621 or 1621HD |
| Width (inches) | 15 |
| Height (inches) | 9.5 |
| Length (inches) | 33.5 |
| Weight (pounds) | 205 |
| Towing capacity (pounds) | 18000 |
| Shock absorption material | Rubber compound |
- What is the towing capacity of the curt l05 rota-flex pin box? The Curt L05 Rota-Flex Pin Box has a towing capacity of 18,000 lbs.
- Does the curt l05 rota-flex pin box require any additional hardware for installation? No, it uses the same bolts as the original pin box and comes ready to install with no additional hardware needed.
- What feature of the rota-flex pin box helps reduce chucking and improve the ride? The Rota-Flex Pin Box has a pivoting head that moves and controls back and forth movement of the king pin within the hitch, significantly reducing chucking and providing a smoother ride.
- Is the curt l05 rota-flex pin box resistant to rust? Yes, it is constructed with steel and finished with a black powder coat that protects against rust.
- Which pin boxes does the curt l05 rota-flex pin box replace? It is specifically designed to replace Lippert 1621 or 1621HD 5th wheel pin boxes.
FAQ
We offer shipping to the USA and Canada, with many items qualifying for free shipping. Shipping costs are calculated based on weight and size at checkout. Shipping estimates are provided during checkout, and many products ship fast from Elkhart, Indiana.
We currently ship to the United States and Canada only.
Items that are eligible for return can be sent back within 30 days of delivery for a refund, but will incur a 20% restocking fee due to the custom nature of many products we carry.
Please note that many items are not eligible for return—including RV holding tanks, roller shades, and other built-to-order or special order items.
All returns must be pre-approved. To check if your item qualifies for return and begin the process, please use the AI Parts Chat on our website.
Because many items are custom-built or special order, cancellations are not always possible. Regular, non-custom items may be canceled if they have not entered the shipping process yet. Use our AI Parts Chat for quick help.
Once your order ships, you'll receive an email with tracking information.
Yes, we specialize in OEM RV parts from trusted brands like Lippert, MORryde, and Spinweld. You're getting factory-direct quality parts, not generics.
Use our AI-powered Parts Chat on the website for fast, accurate guidance. You can also check the detailed specs listed on each product page.
We accept Visa, Mastercard, Discover, American Express, and other major credit cards. We do not currently accept PayPal.
We don't offer wholesale pricing, but we strive to offer the best possible pricing for everyone by working directly with manufacturers.
The fastest way to get help is through the AI Parts Chat in the bottom-right corner of the website. For order-related questions, you can email help@elkhartrvparts.com.
You may also like
Recently viewed
- Opens in a new window.