For anyone towing a heavy fifth wheel, choosing the right pin box can dramatically improve ride quality, reduce chucking, and simplify installation. This guide highlights top pin box choices with air ride technology and robust capacities, spanning Reese, Lippert, CURT, and GEN-Y options. Below you’ll find a concise comparison and detailed product sections to help you decide which model best fits your truck bed, hitch system, and towing needs.
Summary of Selected Products
| Product | Brand | Capacity | Key Feature |
|---|---|---|---|
| Goose Box 5th Wheel Pin Box | Reese | 20,000 lbs | Air ride suspension for smoother towing |
| L05 Air Ride 21K | Lippert Components / CURT | 21,000 lbs | Internal airbag reduces chucking |
| Sidewinder 5th Wheel Pin Box | Reese | 20,000 lbs | Short-bed turning wedge included |
| CURT L05 Air Ride 18K | Lippert Components | 18,000 lbs | Integrated airbag for shock absorption |
| Shocker Quick Air Ride | Shocker Hitch | 24,000 lbs | Pivot air ride system for smoother ride |
Reese Goose Box 5th Wheel Pin Box
The Reese Goose Box 94920 provides a high-capacity solution with air ride technology for premium comfort when towing. Its 20,000-lb maximum capacity supports almost any heavy fifth-wheel trailer, making it suitable for large rigs. The pin box eliminates bed clutter by connecting to the goose ball in the truck bed, allowing easier storage when not towing. Inside the belly, the airbag, dual shocks, and rubber springs work together to absorb road shocks, delivering a smoother ride. An automatic relief valve helps prevent overfilling, while the top-mounted air manifold simplifies inflating the bag. This unit fits Lippert 1621, 1716, 0719, and Rhino series hitches, plus Fabex PB 600 series, ensuring broad compatibility. Installation involves removing the goose ball to achieve a clean truck bed.
What to consider: The Goose Box is designed for maximum strength and stability, but it adds weight to the truck setup. It’s particularly well-suited for RVers who frequently encounter rough roads or heavy loads. The air ride system reduces chucking, which can lessen fatigue during long hauls. If you regularly detach the pin box in urban environments, you may appreciate the clean bed when not towing. Ensure your current hitch pattern and ball size align with the Goose Box configuration for a seamless swap.
CURT L05 Air Ride 21K Fifth Wheel Pin Box
The CURT L05 Air Ride 21K Fifth Wheel Pin Box is a robust option designed to replace Lippert 1621 pin boxes. It features an internal airbag and built-in strut to reduce chucking, jarring, and bouncing during highway travel. With a 21,000-pound rating, it aligns with heavier fifth wheels and can improve ride quality where road irregularities are common. The product is sold as a bolt-on upgrade, using existing hardware for a straightforward installation. This unit benefits users seeking a proven air ride system with strong towing performance and compatibility with Lippert components.
Considerations: The L05 is tuned for effective shock reduction, which helps protect both the tow vehicle and the trailer. Its bulk and weight may require careful handling during installation in tight spaces. Ensure your tongue weight and hitch compatibility align with the 21K rating. If you rely on a Lippert ecosystem, verify that the L05 integrates cleanly with your current Lippert 1621 or matching pin box setup.
Reese Towpower Sidewinder 5th Wheel Pin Box
The Reese Sidewinder 69220 is built to solve short-bed towing challenges. With a 20,000-lb capacity, it reduces turning and clearance issues by allowing up to 90-plus-degree turns from a short-bed truck without cab exit. A wedge is included to fit all Reese fifth-wheel hitches, and additional custom wedges are available for other brands. This model emphasizes maneuverability and safety, making it a practical choice for drivers who frequently navigate tight spaces or campgrounds with limited turning radii. Custom wedge options help tailor fitment to various hitch systems.
Considerations: The Sidewinder’s turning advantage is a key benefit for short-bed pickups, but ensure your hitch alignment and bolt pattern align with the included wedge. The unit’s high payload rating supports heavy trailers, yet installation may require precise alignment and torque specifications. If you regularly park in compact spaces, the Sidewinder’s improved maneuverability can substantially reduce risk of contact with surrounding obstacles.
Lippert L05 Air Ride 18K Fifth Wheel Pin Box
The Lippert L05 Air Ride 18K pin box is designed to replace 1621HD configurations and offers a built-in airbag buffer between the tow vehicle and the trailer. By absorbing road shock and vibrations, it helps reduce jarring and contributes to a smoother towing experience. The design is bolt-on, allowing installation with existing hardware along two rows of bolt holes. While slightly lighter in capacity than the 21K option, the 18,000-pound rating remains ample for many standard and heavy fifth-wheel setups. This unit is compatible with Lippert-compatible hitches and emphasizes straightforward replacement without extensive modifications.
Considerations: If you anticipate frequent heavy loads or rough pavement, the airbag’s performance is a strong selling point. Verify the bolt pattern and mounting compatibility with your specific Lippert 1621HD or other existing pin box. This option is ideal for owners seeking a reliable upgrade without changing their entire hitch system.
Shocker Quick Air Ride 5th Wheel Pin Box
The Shocker Quick Air Ride 5th Wheel Pin Box features a patent-pending air ride system that directs tow resistance through an air spring bag. It claims up to 24,000 pounds of gross towing capability and up to 6,000 pounds of tongue weight, making it suitable for heavy configurations. Its pivot-based design aims to deliver smoother towing without relying on complex linkage systems, and it promises quick installation with a simple swap for factory pin boxes. The air ride system allows air pressure adjustments to optimize ride quality for different loads and road conditions.
Considerations: While the Quick Air Ride model emphasizes easy installation and a smoother ride, confirm compatibility with your existing gooseneck and hitch layout. The system’s performance depends on properly adjusting air pressure for the load. For owners who haul oversized or frequently changing payloads, this option can offer noticeable ride improvements but may require periodic air pressure fine-tuning.
GEN-Y Rhino Fifth Wheel Pin Box With Gooseneck SnapLatch
The GEN-Y Rhino Fifth Wheel Pin Box focuses on space-saving design and enhanced suspension. It integrates a SnapLatch Coupler that automatically latches to a 2 5/16″ gooseneck ball, allowing quick trailer attachment and detachment. The Rhino model supports a pin weight range of 1,500 to 4,500 pounds and up to 30,000 pounds towing capacity, with torsion-flex shock absorption for smoother handling over bumps. This option is well-suited for drivers who want to free up bed space while maintaining a comfortable towing experience.
Considerations: The Rhino’s Gooseneck SnapLatch helps with efficiency in coupling, but verify that your ball size and gooseneck setup are compatible. While space-saving is a benefit, ensure the pin weight range matches your trailer’s tongue weight to avoid over- or under-loading the hitch system. The product’s steel construction supports heavy-duty use, but installation accuracy remains critical for optimal performance.
Buying Guide: Key Purchase Considerations For 5th Wheel Pin Boxes
Pick the right pin box by balancing capacity, ride quality, and compatibility. Here are some essential considerations from multiple perspectives:
- Capacity and trailer weight: Match the pin box’s maximum weight rating to your trailer’s gross vehicle weight. Overbuilding isn’t harmful, but choosing a model that fits your typical loads helps optimize performance and cost.
- Ride quality: Air ride systems and internal airbags reduce chucking and road shock. Consider models with easily adjustable air pressure to accommodate varying loads and road conditions.
- Compatibility: Verify alignment with your hitch brand, bolt patterns, and existing Lippert or Fabex components. Some models explicitly replace Lippert 1621 or 1621HD pin boxes, while others fit multiple brands.
- Bed space and accessibility: For short-bed trucks, options with turning assistance (like Sidewinder) can improve maneuverability. If bed space is a priority, consider models designed to minimize bed obstruction.
- Installation: Bolt-on systems with standard hardware simplify installation. Check for included wedges or adapters if you have a mixed-brand hitch setup.
- Maintenance and serviceability: Air ride components require regular checks of air pressure and valve functionality. Ensure you have access to spare parts or service support in your region.
- Cost vs. benefit: Higher-capacity air ride pin boxes often provide smoother towing but at a higher upfront cost. Weigh the ride improvement against the price and installation effort for your use case.
- Warranty and support: Review warranty terms and the level of dealer or manufacturer support, especially for heavier applications and off-road towing scenarios.
By evaluating these factors—capacity, ride quality, compatibility, installation, and total cost—you can choose a pin box that aligns with your towing habits, vehicle configuration, and comfort goals. The models highlighted here cover a spectrum from premium air ride systems to space-saving designs, offering options for most popular short- and long-bed setups.