MOR/ryde International RPB72-221002300-05 Rubber Pin Box System 14K-18K GVWR Replaces Dexter 221-0023-00 / Leland 7920 7921

The MOR/ryde International RPB72-221002300-05 Rubber Pin Box System is a direct-fit upgrade for fifth wheel trailers rated between 14,001 and 18,000 lbs GVWR. Engineered to replace the Dexter 221-0023-00 pin box (also cross-references Leland 7920 and 7921), this patented system uses an advanced rubber shear spring to absorb towing shock, dramatically reducing the back-and-forth "chucking" and jerking motion that makes fifth wheel towing uncomfortable.

Key Features:

• Patented rubber shear spring absorbs longitudinal and lateral towing shock for a smoother in-cab ride
• Up to 3" of longitudinal (front-to-back) movement to cushion chucking and road impacts
• Up to 1.5" of lateral (side-to-side) movement for multi-axis shock absorption
• GVWR rating: 14,001–18,000 lbs — suitable for a wide range of fifth wheel trailers
• Overall length: 25-7/16" with a mounting length of 18-7/16"
• Replaces OEM pin boxes: Dexter 221-0023-00, Leland 7920, and Leland 7921
• Fatigue tested to CSA standards for long-term reliability
• Black powder coat finish for corrosion resistance
• King pin included
• Drop-in installation using existing bolt holes — typically completed in under an hour

The RPB72-221002300-05 is part of MOR/ryde's proven Rubber Pin Box lineup, purpose-built to reduce driver fatigue on long hauls and protect both tow vehicle and trailer from the repetitive stress of uneven road surfaces. The horizontal planar motion of the rubber spring absorbs energy that would otherwise transfer directly between the trailer and the truck cab. Compatible with a wide range of long-style fifth wheel pin box applications rated at 14K–18K GVWR.