Why would I upgrade my fifth wheel pin box?

Upgraded pin boxes reduce chucking (that jarring back-and-forth motion), soften the ride over bumps, reduce noise, and can even help with short-bed clearance (rotational models). If you experience uncomfortable chucking or want a smoother towing experience, a pin box upgrade is one of the most effective improvements you can make.

What is an air-ride pin box?

An air-ride pin box uses air bags or pneumatic cushioning between the pin box and the trailer frame to absorb road shock and reduce chucking. Brands like MORryde and Lippert offer air-ride pin box replacements. They significantly smooth out the ride quality, especially on rough roads, and reduce the impact felt inside both the truck and trailer.

How much does a pin box upgrade cost?

Pin box upgrades typically range from $300 to $1,200+ depending on the type. Basic cushioned pin boxes start around $300-$500. Air-ride models from MORryde or Lippert run $600-$1,000. Rotational pin boxes (like Reese Sidewinder) that also solve short-bed clearance issues are $800-$1,200. Installation adds $100-$300 if you hire a shop.

Does a pin box upgrade reduce chucking?

Yes, reducing chucking is the primary benefit of most pin box upgrades. Cushioned and air-ride pin boxes absorb the back-and-forth forces that cause chucking. Even a basic cushioned pin box can dramatically reduce chucking compared to a rigid factory pin box. For severe chucking, air-ride models provide the most improvement.

Pin Box Upgrades

Q: What is a pin box on a fifth wheel trailer?

The pin box is the steel housing on the front of your fifth wheel trailer that contains the kingpin. It connects the trailer to the hitch in your truck bed. The standard pin box that comes with most trailers is a simple steel box. Upgraded pin boxes add cushioning, air suspension, or rotation to improve the towing experience.

Q: Can I install a pin box upgrade myself?

Yes, most pin box upgrades are a DIY-friendly job. You'll need a jack to support the trailer, basic hand tools, and typically 2-4 hours. The process involves supporting the trailer, removing the old pin box bolts, swapping in the new unit, and re-torquing everything. Having a helper makes it easier since pin boxes are heavy.

Written by a towing industry expert

The short answer: An upgraded pin box can make a huge difference in ride quality. Here's when it's worth the money.

What Is a Pin Box on a Fifth Wheel Trailer?

The pin box is the part of your fifth wheel trailer that houses the kingpin — the pin that drops into your hitch. It's mounted to the front of your trailer's frame.

Stock pin boxes are basic. Upgraded pin boxes add cushioning, rotation, or other features to improve the towing experience.

Why Upgrade Your Pin Box?

Three main reasons

1. Fix Chucking/Bucking

That jarring back-and-forth motion on rough roads? An air-ride or cushioned pin box absorbs it before it reaches your truck. This is the #1 reason people upgrade.

2. Short Bed Solution

Rotational pin boxes pivot the trailer around the kingpin instead of at your cab. This can eliminate the need for a slider hitch on short bed trucks.

3. Quieter Ride

Upgraded pin boxes reduce the clunking and popping noises that come from the trailer's front end.

What Types of Pin Box Upgrades Are Available?

Air-Ride Pin Boxes

Best for Chucking

Uses air bags or air springs to cushion the connection. The most effective at eliminating chucking and improving ride quality.

Popular brands:

MORryde, Reese

Price range:

$1,500 - $2,500

Rotational/Articulating Pin Boxes

Best for Short Beds

The kingpin pivots in the pin box instead of at the hitch. Creates more clearance between trailer and cab during turns — great for short bed trucks.

Popular brands:

Reese Revolution, PullRite

Price range:

$1,200 - $2,000

Cushioned/Dampened Pin Boxes

Budget-Friendly

Uses rubber or polymer cushions instead of air. Less effective than air-ride but more affordable. A good middle ground.

Popular brands:

Various aftermarket

Price range:

$600 - $1,200

Combination (Air + Rotational)

Best of Both

Some pin boxes combine air-ride cushioning with rotational capability. The ultimate upgrade for short bed trucks who also want a smooth ride.

Popular brands:

Reese Goose Box Revolution

Price range:

$2,000 - $3,000+

Can I Install a Pin Box Upgrade Myself?

What's involved

Pin box upgrades require removing your trailer's existing pin box and installing the new one. It's a significant job but doable for experienced DIYers.