RAM 2-5/16″ Round Adjustable Gooseneck Coupler – 25,000 lb Capacity
The RAM 2-5/16″ Round Adjustable Gooseneck Coupler provides a strong, secure connection for heavy-duty gooseneck trailers. Rated for a maximum 25,000 lb trailer capacity, this coupler features an adjustable round-tube design that allows the coupler height to be matched to the tow vehicle for proper trailer alignment.
The one-piece cast coupler head provides increased strength and a precision fit around the hitch ball. A curved internal ball-clamp bar securely captures the 2-5/16″ ball while allowing smoother coupling and uncoupling without a separate bottom plate.
A hidden spring-loaded latch mechanism protects the moving components from dirt and debris while keeping the coupler easy to operate. The included load-bearing adjustment pin and two set bolts secure the inner tube after the proper towing height has been selected.
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What’s Included
- (1) RAM GCPN25000 Adjustable Gooseneck Coupler Assembly with Load Bearing Pin and 2 Set Bolts
Key Features
- Fits a Standard 2-5/16″ Gooseneck Hitch Ball
- Maximum 25,000 lb Coupler Capacity
- Heavy-Duty Round Adjustable-Tube Design
- One-Piece Cast Coupler Head
- Curved Internal Ball-Clamp Bar
- Hidden Spring-Loaded Latch Mechanism
- 8″ Vertical Height Adjustment
- Weld-On 4-1/2″ Round Outer Tube
- 4″ Round Adjustable Inner Tube
- Load-Bearing Adjustment Pin
- Two Set Bolts for Additional Security
Adjustable Coupler Height
The inner coupler tube slides vertically inside the weld-on outer tube, providing up to 8″ of height adjustment. This allows the coupler height to be matched to the tow vehicle so the trailer can travel as level as possible.
After the correct height is selected, the load-bearing pin supports the inner tube and the two set bolts help secure the assembly and reduce movement.
One-Piece Cast Coupler Head
The coupler head uses a one-piece cast construction for increased strength, durability, and a precise fit around the hitch ball. Its curved internal clamp bar securely captures the ball while helping make coupling and uncoupling easier.
The spring-loaded latch mechanism is positioned inside the casting to help protect the moving components from dirt, road debris, and damage during heavy-duty use.
Product Specifications
- Brand: RAM
- Part Number: GCPN25000
- Dexter Reference Number: 264312
- Coupler Type: Adjustable Gooseneck Coupler
- Coupler Tube Shape: Round
- Hitch Ball Size: 2-5/16″
- Coupler Capacity: 25,000 lb
- Maximum Trailer Weight Capacity: 25,000 lb
- Vertical Adjustment: 8″
- Retracted Assembly Height: 29.2″
- Extended Assembly Height: Approximately 37.5″
- Outer Tube Diameter: 4-1/2″
- Inner Tube Diameter: 4″
- Mounting Style: Weld-On Outer Tube
- Package Weight: Approximately 57 lb
Installation Information
The 4-1/2″ round outer tube is designed to be welded directly to the trailer structure. The 4″ inner tube slides inside the outer tube to establish the proper coupler height.
Because the coupler is a critical towing component, installation and structural welding should be completed by a qualified professional. Verify proper alignment, weld quality, pin engagement, set-bolt tightness, and latch operation before towing.
Capacity and Fitment Notice
The coupler capacity must meet or exceed the trailer’s gross trailer weight rating. Never exceed the 25,000 lb maximum coupler capacity or the ratings of the trailer, hitch ball, tow vehicle, safety equipment, tires, wheels, axles, or other towing components.
Confirm the required tube dimensions, coupler height, hitch-ball size, and weight rating before ordering.
Recommended Maintenance
Keep the hitch-ball pocket and latch mechanism clean and inspect the coupler regularly. Recommended maintenance includes:
- Inspecting the Coupler, Structural Welds, Pins, and Set Bolts
- Greasing the Hitch-Ball Pocket
- Lubricating the Latch Pivot Points
- Replacing Damaged or Missing Retaining Pins
- Checking for Wear, Cracks, Corrosion, or Deformation Before Towing
Ideal Applications
- Gooseneck Equipment Trailers
- Flatbed Gooseneck Trailers
- Agricultural Trailers
- Commercial Trailers
- Heavy-Duty Utility Trailers
- Replacement Gooseneck Coupler Installations
Why Buy from Johnson Trailer Parts?
Johnson Trailer Parts supplies genuine RAM and Dexter trailer components backed by knowledgeable customer support. We can help you verify coupler capacity, hitch-ball size, tube dimensions, and trailer compatibility before ordering.
Questions?
Need help determining whether the RAM GCPN25000 is correct for your trailer? Contact us for assistance with product selection, dimensions, installation, or replacement parts.
Call or Text: (602) 292-9690
Email: sales@johnsontrailerparts.com






