MORryde Rubber Pin Box RPB72-2210031-05 - Direct Replacement for Dexter 221-0031
The MORryde Rubber Pin Box RPB72-2210031-05 is engineered to eliminate the jarring chucking motion that plagues fifth wheel towing. Designed as a direct bolt-on replacement for Dexter 221-0031 pin boxes, this premium rubber pin box delivers a smoother, quieter ride for fifth wheels rated between 14,001 and 18,000 lbs GVWR.
Why Choose the MORryde RPB72-2210031-05 Pin Box?
MORryde's patented rubber cushion technology absorbs road shock and vibration before it reaches your fifth wheel, dramatically reducing the chucking and jarring that causes interior damage, loosens fasteners, and creates an uncomfortable ride. Unlike traditional rigid pin boxes, the RPB72-2210031-05 features precision-engineered rubber elements that flex and compress to isolate your trailer from truck bed movement.
This pin box is specifically designed to replace Dexter 221-0031 pin boxes on fifth wheels with a gross vehicle weight rating of 14,001 to 18,000 pounds. The direct-fit design means no modifications, no adapters, and no guesswork - just remove your old Dexter pin box and bolt this one in its place.
Key Features & Specifications
- Direct Replacement: Bolt-on replacement for Dexter 221-0031 pin boxes
- Weight Rating: 14,001 - 18,000 lbs GVWR
- Rubber Cushion Technology: Patented design absorbs shock and eliminates chucking
- Premium Construction: Heavy-duty steel frame with engineered rubber elements
- Easy Installation: Direct bolt-on fitment with existing mounting holes
- Maintenance-Free: No greasing or adjustment required
- Part Number: RPB72-2210031-05
- Replaces: Dexter 221-0031
- Barcode: 810089870438
Benefits of Upgrading to MORryde Rubber Pin Box
Eliminate Chucking: The rubber cushion absorbs the jarring back-and-forth motion that damages your RV interior and creates an uncomfortable ride.
Protect Your Investment: Reduce stress on your fifth wheel's frame, walls, and interior components by isolating road shock before it reaches your trailer.
Smoother Towing: Experience noticeably quieter, more comfortable towing with reduced vibration and noise transmission.
Easy Upgrade: Direct bolt-on installation means you can upgrade in your driveway with basic tools - no welding or modifications required.
Proven Reliability: MORryde's pin boxes are trusted by RV manufacturers and owners nationwide for their durability and performance.
Compatible Fifth Wheels & Applications
This pin box is designed for fifth wheel trailers equipped with Dexter 221-0031 pin boxes and rated between 14,001 and 18,000 pounds GVWR. Common applications include:
- Mid-size to large fifth wheel travel trailers
- Toy hauler fifth wheels in the 14K-18K weight range
- Luxury fifth wheels with Dexter pin box systems
- Fifth wheels experiencing chucking or jarring during towing
If you're unsure about compatibility, verify your current pin box part number (Dexter 221-0031) and your fifth wheel's GVWR rating. For fifth wheels in different weight ranges with the same Dexter pin box, see our RPB72-2210031-03 for under 11,500 lbs or RPB72-2210031-04 for 11,501-14,000 lbs.
Complete Your Fifth Wheel Upgrade
Maximize your towing comfort and protect your investment with these complementary MORryde components:
- MORryde Stability Disc Replacement Kit RPB77-009 - Maintenance kit for your rubber pin box
- MORryde Pin Box Stability Disc RPB710-005 - Replacement stability components
- MORryde Pin Box Retainment Rod RPB712-008 - Essential retention hardware
Compare MORryde Pin Box Options for Dexter Replacements
| Model | Weight Rating | Replaces | Best For | View Details |
|---|---|---|---|---|
| RPB72-2210031-03 | Under 11,500 lbs | Dexter 221-0031 | Lightweight fifth wheels | View Details |
| RPB72-2210031-04 | 11,501 - 14,000 lbs | Dexter 221-0031 | Mid-size fifth wheels | View Details |
| RPB72-2210031-05 | 14,001 - 18,000 lbs | Dexter 221-0031 | Large fifth wheels (Current Product) | Current Product |
Helpful Tip: Always verify your fifth wheel's GVWR rating (found on the VIN sticker) and current pin box part number before ordering to ensure proper fitment and weight capacity.
Installation & Maintenance
The MORryde RPB72-2210031-05 installs as a direct bolt-on replacement for your existing Dexter 221-0031 pin box. Installation typically takes 1-2 hours with basic hand tools and requires no welding or modifications. The rubber cushion system is maintenance-free and requires no greasing or periodic adjustment.
For installation support or technical questions, use our AI Live Chat for deep product knowledge and assistance.
Frequently Asked Questions
Will this pin box eliminate all chucking in my fifth wheel?
The MORryde rubber pin box dramatically reduces chucking by absorbing shock and vibration. While it won't eliminate 100% of movement (some articulation is necessary for safe towing), most owners report a 70-90% reduction in jarring motion.
How do I know if I have a Dexter 221-0031 pin box?
Check the identification plate or stamping on your current pin box. The part number is typically stamped on the side or top of the pin box assembly.
What's the difference between the -03, -04, and -05 versions?
The number indicates the weight rating: -03 is for under 11,500 lbs, -04 is for 11,501-14,000 lbs, and -05 (this model) is for 14,001-18,000 lbs GVWR. Always match the pin box to your fifth wheel's actual GVWR.
Do I need any special tools for installation?
Basic hand tools (wrenches, sockets, jack stands) are all that's required. No welding or cutting is necessary.
Why Buy from Elkhart RV Parts?
As an authorized MORryde dealer, we guarantee 100% authentic OEM-grade parts backed by manufacturer warranty. Every MORryde pin box ships directly from authorized distribution to ensure you receive genuine products with full factory support.
Ready to eliminate chucking and upgrade your fifth wheel towing experience? Add the MORryde RPB72-2210031-05 Rubber Pin Box to your cart today and experience the difference that premium rubber cushion technology makes.
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.