Lippert 369535 Trailair Pin Box Flex Air 21K Review

Let’s Talk About Lippert 369535 Trailair Pin Box Flex Air 21K

Let’s talk about the Lippert 369535 Trailair Pin Box Flex Air 21K, a game-changer for anyone serious about fifth-wheel towing. This isn’t just another pin box; it’s a sophisticated piece of engineering from Lippert Components designed to smooth out your ride and protect your precious cargo.

After years of battling bone-jarring bumps and frustrating chucking with my old fifth-wheel setup, I was desperate for a solution. The constant vibrations were not only uncomfortable but also threatened the structural integrity of both my truck and RV. I yearned for a way to make long hauls less of an ordeal and more of a joy.

The moment I unboxed the Lippert 369535 Trailair Pin Box Flex Air 21K, I was struck by its robust construction. The welds were clean and solid, and the heavy-duty materials gave me confidence in its ability to handle the rigors of the road. It felt like a serious upgrade, promising a smoother and more controlled towing experience.

I considered other options like the MorRyde Rubber Pin Box and the Gen-Y Executive Fifth Wheel Coupler. Ultimately, I chose the Trailair due to its combination of air ride technology and an integrated oil shock absorber, which seemed like the most comprehensive solution for dampening road shock. The Trailair’s reputation for reducing chucking was also a significant factor in my decision.

My first impression was one of hopeful anticipation. This pin box looked like the answer to my towing prayers, and I was eager to see if it lived up to the hype. Would it truly tame the beast of fifth-wheel towing, or would it be just another expensive experiment?


Real-World Testing: Putting Lippert 369535 Trailair Pin Box Flex Air 21K to the Test

First Use Experience

My first voyage with the Lippert 369535 Trailair Pin Box Flex Air 21K was a 500-mile trek from my home base in the Arizona desert to the cooler mountains of Flagstaff. The route included a mix of smooth interstate highways and some seriously neglected backroads, providing a perfect testing ground.

The difference was immediately noticeable. The harsh jolts and vibrations that I had grown accustomed to were significantly muted, and the dreaded chucking sensation was almost completely eliminated. It was like towing a completely different RV; a more refined and controlled experience.

The improvement was even more pronounced on those rough backroads. While I still felt the bumps, the Trailair softened the impact, preventing the kind of jarring motions that previously had me bracing for the worst. The air bag and oil shock absorber were working in harmony to deliver a remarkably smooth ride.

There were no initial hiccups or surprises, which was a welcome change from some of my previous aftermarket installations. The Trailair performed flawlessly right out of the gate, exceeding my initial expectations.

Extended Use & Reliability

After several months and thousands of miles, the Lippert 369535 Trailair Pin Box Flex Air 21K continues to impress. It has endured scorching desert heat, torrential downpours, and even a brief encounter with a gravel road construction zone, all without missing a beat.

There are no concerning signs of wear and tear. The air bag remains fully inflated, and the shock absorber shows no signs of leaking. The durable construction gives me confidence that this pin box will last for many years to come.

Maintenance has been minimal, primarily involving occasional visual inspections and ensuring the air pressure is within the recommended range. The Trailair is remarkably easy to care for, a welcome change from some of the more demanding components on my RV.

The Trailair has utterly transformed my fifth-wheel towing experience. It outperforms my previous rigid pin box by a wide margin, providing a level of comfort and control that I never thought possible. It has proven to be a worthy investment that has significantly reduced stress on both me and my equipment.

Breaking Down the Features of Lippert 369535 Trailair Pin Box Flex Air 21K

Specifications

The Lippert 369535 Trailair Pin Box Flex Air 21K is engineered for fifth-wheel trailers with a 21,000 lbs. tow capacity. It integrates air ride technology via an internal air bag, working in tandem with an oil shock absorber to manage rebound and dampen chucking.

The heavy-duty pivoting head is specifically designed to minimize fore-to-aft movement, further reducing chucking. The construction includes a durable rubberized compound designed to absorb additional road shock and vibration. These features contribute to a more stable and comfortable towing experience.

These specifications are vital because they directly impact the smoothness and safety of your towing experience. The air ride system and shock absorber mitigate road shock, lessening the stress on your RV’s frame and contents. By controlling chucking, the pivoting head enhances ride comfort and stability.

Performance & Functionality

The Lippert 369535 Trailair Pin Box Flex Air 21K excels at smoothing out the ride and reducing the harshness of towing a fifth-wheel. It effectively dampens road shock and vibration, making for a more comfortable and controlled towing experience.

Its strength lies in its ability to mitigate the jolts and bumps typically associated with fifth-wheel towing. The primary weakness is that it requires periodic air pressure checks, but that is a minor inconvenience compared to the benefits it provides. It more than meets my expectations.

Design & Ergonomics

The Trailair boasts robust construction, utilizing high-quality materials and meticulous welding. While heavier than a standard pin box, the added weight is a reasonable trade-off for the enhanced performance and durability it provides. The unit instills confidence through its sturdy build and professional finish.

The installation process may require professional assistance, depending on your mechanical aptitude. Once installed, the Trailair is straightforward to operate, requiring minimal adjustments and maintenance. Its user-friendly design enhances the overall towing experience.

Durability & Maintenance

The Lippert 369535 Trailair Pin Box Flex Air 21K is built to last, capable of withstanding the rigors of long-distance towing and varied road conditions. With proper care and maintenance, it should provide years of reliable service.

Maintaining the Trailair is simple, requiring only occasional air pressure checks and visual inspections. The straightforward design allows for easy access to critical components, simplifying any necessary repairs or adjustments. Its ease of maintenance ensures minimal downtime and continued performance.

Accessories and Customization Options

The Lippert 369535 Trailair Pin Box Flex Air 21K doesn’t come with a plethora of accessories, focusing instead on its core functionality. However, it’s compatible with most standard fifth-wheel hitches, offering flexibility in your towing setup.

The primary customization option involves adjusting the air pressure in the air bag to fine-tune the ride comfort based on your load and road conditions. While there aren’t extensive customization options, the Trailair’s adaptability to different hitch systems makes it versatile for various towing needs.

Pros and Cons of Lippert 369535 Trailair Pin Box Flex Air 21K

Pros

  • Significantly reduces chucking and road shock.
  • Provides a smoother, more comfortable towing experience.
  • Durable construction ensures long-lasting performance.
  • Easy to maintain with minimal upkeep requirements.
  • Compatible with most standard fifth-wheel hitches.

Cons

  • Higher initial cost compared to standard pin boxes.
  • Requires periodic air pressure checks.


Who Should Buy Lippert 369535 Trailair Pin Box Flex Air 21K?

The Lippert 369535 Trailair Pin Box Flex Air 21K is perfect for RVers who frequently tow their fifth-wheel over long distances or on rough roads. Those seeking a smoother, more comfortable towing experience will greatly benefit. If you’re tired of feeling every bump and jostle on the road, this pin box is a must-have.

This product might not be necessary for those who only occasionally tow their fifth-wheel on well-maintained roads. Someone on a very tight budget might find the initial cost prohibitive.

Consider investing in a quality air compressor for convenient air pressure adjustments.

Conclusion on Lippert 369535 Trailair Pin Box Flex Air 21K

The Lippert 369535 Trailair Pin Box Flex Air 21K is a worthwhile investment for anyone seeking a smoother, more comfortable fifth-wheel towing experience. Its ability to dampen road shock and reduce chucking is truly transformative.

While the price may seem steep, the long-term benefits in terms of reduced stress on your RV and improved ride comfort make it a justified expense. I wholeheartedly recommend it.

If you’re ready to say goodbye to bone-jarring bumps and hello to a more enjoyable towing experience, the Lippert 369535 Trailair Pin Box Flex Air 21K is the answer. Upgrade your tow today and experience the difference!

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