---
MORryde Rubber Pin Box RPB77-FD-06 - Revolutionary Fifth Wheel Towing System
Experience the smoothest fifth wheel towing you've ever had with the MORryde Rubber Pin Box RPB77-FD-06. This revolutionary pin box system is specifically designed to replace the Lippert Rhino pin box on the heaviest fifth wheels with a GVWR over 18,000 lbs, delivering a jerk-free, chuck-free ride that transforms your towing experience even with the largest residential and luxury fifth wheels.
If you're tired of the uncomfortable jerking and chucking that comes with traditional rigid pin boxes, especially on heavy-duty fifth wheels, the MORryde Rubber Pin Box changes everything. Its patented rubber shear spring technology absorbs road shock and eliminates the troublesome aspects of towing, making every trip smoother and more enjoyable regardless of your trailer's weight.
Why Choose the MORryde Rubber Pin Box RPB77-FD-06?
The MORryde Pin Box creates a smoother ride and eliminates the troublesome aspects of towing fifth wheels by greatly reducing chucking and jerking on all types of road conditions. The rubber shear springs act as cushions, effectively reducing road shock while maintaining full horizontal planar motion. This means you'll experience significantly less wear and tear on both your fifth wheel and tow vehicle, while enjoying a more comfortable ride that makes towing actually enjoyable.
Unlike air-lifted springs that can leak or shock absorbers that need replacement, the MORryde rubber pin box has a long component life with continuous performance. Installation is simple and takes about an hour on most fifth wheels, with no maintenance required after installation. For the heaviest fifth wheels over 18,000 lbs GVWR, this is the ultimate upgrade that delivers premium ride quality.
Key Features & Benefits
- Patented Rubber Shear Spring Technology: Dampens transmission of forces from the fifth wheel to the tow vehicle, absorbing road shock while maintaining full horizontal planar motion
- Eliminates Chucking & Jerking: Reduces back-and-forth movement up to 3 inches and side-to-side movement up to 1.5 inches for a dramatically smoother ride
- Jerk-Free Starts & Stops: No more uncomfortable lurching when accelerating or braking with your fifth wheel
- Boosts Towing Performance: Greatly improves maneuverability and decreases wear and tear on both your RV and truck
- Long Component Life: No air-lifted springs to leak, no shock absorbers to replace - just continuous, reliable performance
- Simple Installation: Takes approximately one hour to install on most fifth wheels
- Direct Replacement: Specifically designed to replace Lippert Rhino pin boxes on fifth wheels with GVWR over 18,000 lbs
- Maximum Duty Construction: Engineered to handle the demands of the largest, heaviest fifth wheels with confidence
- Fatigue Tested: Meets CSA standards for safety and durability
- Complete Hardware Kit: Includes all mounting hardware and detailed installation instructions
- Perfect for Luxury RVs: Ideal for residential fifth wheels, toy haulers, and premium models
Technical Specifications
- Part Number: RPB77-FD-06
- Replaces: Lippert Rhino Pin Box
- GVWR Rating: Over 18,000 lbs
- Movement Capacity: Up to 3" fore/aft, up to 1.5" side-to-side
- Dimensions: 45" L x 20" W x 17" H
- Weight: 165 lbs
- Installation Time: Approximately 1 hour
- Maintenance Required: None
- Manufacturer: MORryde International
- What's Included: Pin box assembly, complete mounting hardware kit, installation instructions
How It Works
The MORryde Rubber Pin Box uses patented rubber shear spring technology that fundamentally changes how forces transfer between your fifth wheel and tow vehicle. When you hit bumps, potholes, or uneven road surfaces, the rubber shear springs compress and absorb the shock instead of transmitting it directly to your truck. This cushioning effect eliminates the jarring chucking sensation while still allowing the pin box to maintain proper horizontal movement for safe turning and maneuvering. For the heaviest fifth wheels over 18,000 lbs, this technology makes a dramatic difference in ride quality and reduces stress on both your trailer and truck.
Perfect For
- Fifth wheel owners with trailers over 18,000 lbs GVWR experiencing uncomfortable chucking and jerking
- RVers looking to reduce wear and tear on their heavy-duty fifth wheel and truck
- Anyone replacing a worn Lippert Rhino pin box on trailers over 18K weight
- Luxury and residential fifth wheel owners who want premium ride quality
- Toy hauler owners with heavy-duty trailers
- Professional installers and RV service centers
- Full-time RVers who spend significant time on the road with large trailers
- Owners seeking the ultimate towing comfort for their heavy fifth wheel
Compare Fifth Wheel Pin Box Options
| Model | Technology | GVWR Capacity | Movement Range | Best For | View Details |
|---|---|---|---|---|---|
|
MORryde RPB77-FD-06 (Current Product) |
Rubber Shear Spring | Over 18,000 lbs | 3" fore/aft 1.5" lateral |
Lippert Rhino replacement, heaviest 5th wheels, luxury RVs | You're viewing this product |
| MORryde RPB77-FD-05 | Rubber Shear Spring | 14,001 - 18,000 lbs | 3" fore/aft 1.5" lateral |
Lippert Rhino 14-001 replacement, heavy-duty 5th wheels | View Details → |
| MORryde RPB77-FD-04 | Rubber Shear Spring | 11,501 - 14,000 lbs | 3" fore/aft 1.5" lateral |
Lippert Rhino replacement, mid-weight 5th wheels | View Details → |
| MORryde RPB77-FD-03 | Rubber Shear Spring | Under 11,500 lbs | 3" fore/aft 1.5" lateral |
Lippert Rhino replacement, lighter 5th wheels | View Details → |
| Curt Flex Air Pin Box | Air Bag Suspension | 21,000 lbs | Air suspension | Heavy-duty, adjustable air ride | View Details → |
| Lippert L05 Standard | Rigid Pin Box | 15,500 lbs | None (rigid) | Budget option, standard replacement | View Details → |
| Lippert L07 Extended | Rigid Pin Box | 15,500 lbs | None (rigid) | Extended length, budget option | View Details → |
💡 Helpful Tip: Choose a pin box based on your trailer's GVWR and the original pin box model you're replacing. The RPB77-FD-06 is ideal for the heaviest fifth wheels over 18,000 lbs. If your trailer is lighter, consider the RPB77-FD-05 (14,001-18,000 lbs), RPB77-FD-04 (11,501-14,000 lbs), or RPB77-FD-03 (under 11,500 lbs). MORryde rubber pin boxes offer superior vibration dampening compared to rigid pin boxes, while air suspension systems provide adjustable ride height but require more maintenance.
Complete Your Pin Box Setup
Keep your MORryde Rubber Pin Box performing at its best with these genuine replacement components and accessories:
- MORryde RPB77-009 Stability Disc Replacement Kit - Maintain optimal performance with this complete disc replacement kit
- MORryde RPB712-008 Pin Box Retainment Rod - Essential retention pin for secure pin box operation
- MORryde RPB710-005 Stability Disc - Individual stability disc for maintenance and repairs
- MORryde RPB75-002 Stability Pad Assembly - Complete pad assembly for optimal stability
- MORryde RPB71-004 Skid Pad Assembly - Protect your pin box with this durable skid pad
About MORryde International
Founded in 1966 in Elkhart, Indiana, MORryde International designs and manufactures premium rubber suspension systems and ride enhancement products for versatile vehicle applications. With decades of engineering expertise and a commitment to quality, MORryde has become the trusted name in fifth wheel pin box technology. Every MORryde product is backed by rigorous testing and a dedication to improving the RV towing experience.
Frequently Asked Questions
How does the MORryde Rubber Pin Box reduce chucking?
The patented rubber shear spring technology absorbs up to 3 inches of fore/aft movement and 1.5 inches of lateral movement, cushioning the transfer of forces between your fifth wheel and truck. This eliminates the jarring back-and-forth motion that causes chucking, especially important on the heaviest fifth wheels.
Will this fit my fifth wheel with a Lippert Rhino pin box over 18,000 lbs?
Yes, the RPB77-FD-06 is specifically designed as a direct replacement for Lippert Rhino pin boxes on fifth wheels with a GVWR over 18,000 lbs. It's engineered to bolt right in place of your existing pin box with the included hardware.
What's the difference between the RPB77-FD-06 and other MORryde pin boxes?
The RPB77-FD-06 is designed for the heaviest fifth wheels with GVWR over 18,000 lbs. The RPB77-FD-05 is for 14,001-18,000 lbs, the RPB77-FD-04 is for 11,501-14,000 lbs, and the RPB77-FD-03 is for trailers under 11,500 lbs. All use the same rubber shear spring technology but are engineered for different weight capacities. Always choose the model that matches your trailer's GVWR.
How long does installation take?
Installation typically takes about one hour on most fifth wheels. The process is straightforward and can be completed by most RV owners with basic tools, though professional installation is recommended for heavy-duty applications.
Does the rubber pin box require maintenance?
No, that's one of the major advantages of the MORryde system. Unlike air-lifted springs that can leak or shock absorbers that wear out, the rubber pin box requires no maintenance and delivers continuous performance throughout its long service life.
What's the difference between this and an air ride pin box?
The MORryde Rubber Pin Box uses solid rubber shear springs that never need adjustment or maintenance, while air ride systems use air bags that require monitoring and can develop leaks. The rubber system provides consistent, reliable performance without the complexity of air suspension.
Will this work with my truck's fifth wheel hitch?
Yes, the MORryde Rubber Pin Box works with all standard fifth wheel hitches. It replaces the pin box on your trailer side, not your truck's hitch, so it's compatible with any fifth wheel hitch system.
Is this suitable for toy haulers?
Absolutely! The RPB77-FD-06 is perfect for heavy-duty toy haulers over 18,000 lbs GVWR. The rubber shear spring technology handles the weight and provides a smoother ride even with heavy cargo loaded in the rear.
Is professional installation recommended?
While many RV owners can install this themselves, professional installation is recommended for the heaviest fifth wheels to ensure proper torque specifications and alignment. This ensures optimal performance and safety.
Can I use this on a lighter trailer?
While it would physically work, it's best to use the pin box rated for your trailer's actual GVWR. For lighter trailers, consider the RPB77-FD-05, RPB77-FD-04, or RPB77-FD-03 for optimal performance matched to your trailer's weight.
Order Your MORryde Rubber Pin Box Today
Transform your fifth wheel towing experience with the MORryde Rubber Pin Box RPB77-FD-06. Say goodbye to uncomfortable chucking and jerking, and hello to smooth, enjoyable towing even with the heaviest fifth wheels. As an authorized MORryde dealer, ElkhartRVParts.com guarantees you're getting 100% authentic OEM parts with fast shipping and expert support.
Need help with product identification or have questions? Use our AI Live Chat for instant assistance with deep product knowledge - we're here to help you find the perfect solution for your fifth wheel.
| Gvwr (pounds) | 18000 |
|---|---|
| Back-and-forth movement absorption (inches) | 3 |
| Side-to-side movement absorption (inches) | 1.5 |
| Material | Rubber shear spring technology |
| Test standards | CSA fatigue tested |
- What type of product is the morryde rpb77-fd-06? It is a 5th Wheel Pin Box replacement for Lippert Rhino with over 18000 GVWR.
- How does the morryde rubber pin box improve the towing experience? It provides a smoother ride by reducing back-and-forth movement and absorbing energy transfer from trailer to tow vehicle, resulting in chuck-free and jerk-free towing.
- What movement absorption capabilities does the morryde rpb77-fd-06 have? It absorbs up to 3 inches of back-and-forth movement and up to 1.5 inches of side-to-side movement.
- Is the morryde rpb77-fd-06 compatible with various trailer weights? Yes, it is compatible with a wide range of trailer weight ratings.
- Are there any accessories available for the morryde rpb77-fd-06? Yes, optional accessories include the Pull Rite Adapter Plate (RPB77-001) and the Gooseneck/Andersen Hitch Adapter Kit (RPB77-006).
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.