Best Kingpin Adapter For Gooseneck Trailer: 10 Options Compared

#1 · Best Overall

1. Nilight Fifth Wheel Adapter

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Tractor
• Material: Alloy Steel

Best for: Chrome-finished tractor towing.

Why it ranks #1: Specifies a 2-5/16-inch ball, forged steel construction, a 30,000-pound maximum load, and a two-year warranty for a clear standard-adapter choice.

A chrome-plated finish sets the Nilight adapter apart, with the listing linking that surface treatment to increased hardness, reduced friction resistance, and corrosion resistance. It converts a kingpin connection to a 2-5/16-inch gooseneck ball and lists a maximum load of 30,000 pounds.

The 2-5/16-inch gooseneck ball specification helps buyers compare the adapter with their hitch, and the 30,000-pound maximum load provides a stated capacity boundary. Forged steel and one-piece machining are presented as strength and durability features for towing use. Its chrome-plated surface is described as reducing friction resistance and resisting corrosion, a practical consideration for a metal component exposed to use. The listed vehicle compatibility is tractor, so buyers should weigh that stated scope when selecting a setup.

Skip it if you need a specifically stated 2-inch kingpin dimension; Misakomo lists that measurement alongside its ball size.

This is for tractor owners seeking a 30,000-pound-rated adapter with a chrome-plated finish and 2-5/16-inch ball. The listing identifies tractor compatibility, and buyers needing additional vehicle applications or a confirmed kingpin dimension should account for those limits.

Listed on Amazon as: Nilight Fifth Wheel to Gooseneck Ball Adapter, Kingpin to 2-5/16 Inch Gooseneck Ball Towing Receiver Adapter for Trailer Tractor w/ 30,000lbs Max Load, Silver

#2 · Best Raised Design

2. springcraze SC32U Adapter

• Compatible with Vehicle Type: Truck

Best for: Raised-clearance heavy towing.

Why it ranks #2: Pairs a 30,000-pound GVW rating and 2-inch kingpin with a 1.5-inch lift, rust-protection coatings, anti-tilt washer, and lube plate.

A 1.5-inch lift base is the springcraze adapter’s defining feature, adding stated ground clearance for towing scenarios where height matters. The forged-alloy-steel unit is rated for up to 30,000 pounds GVW and matches a 2-inch kingpin to a 2-5/16-inch gooseneck ball.

The 1.5-inch raised base increases ground clearance, which can help accommodate towing scenarios that need extra height. Its 30,000-pound GVW rating gives buyers a stated capacity to compare with their trailer, while the 2-inch kingpin and 2-5/16-inch ball define the connection dimensions. Forged alloy steel is paired with powder coating and phosphate treatment, which are specified for rust protection against salt spray, rain, and temperature changes. The package also includes an anti-tilt PU washer and lube plate.

Skip it if you need adjustable height from 12 to 16 inches; Lamerto lists that range and a cushioned hitch.

This suits buyers needing a fixed 1.5-inch lift, a stated 30,000-pound GVW rating, and a 2-inch-to-2-5/16-inch connection. The fixed lift is a boundary: it does not offer the listed height adjustment of some adapters.

Listed on Amazon as: Kingpin to Gooseneck Ball Adapter 1.5" Raised Reinforced Rib for 2-5/16'' Fifth Wheel Gooseneck Ball Hitch Adapter, Anti-tilt PU Washer and 5th Wheel Lube Plate Included

#3 · Best Included Hardware

3. FlexHitch Raised Adapter

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Tractor, Trailer
• Material: Alloy Steel

Best for: Quick-change fifth-wheel towing.

Why it ranks #3: Lists a 2-5/16-inch ball connection and includes four anti-tilt washers plus a lube plate; its raised design is identified as 3 inches.

The FlexHitch adapter is described as switching between fifth-wheel and gooseneck towing without removing the hitch or modifying the truck bed, a practical draw for owners changing towing modes. It connects a kingpin to a 2-5/16-inch ball and includes four anti-tilt washers and a lube plate.

The no-removal, no-bed-modification conversion approach is intended to make switching towing modes quicker, while the stated 2-5/16-inch ball identifies the gooseneck connection size. A reinforced rib structure is described as resisting deformation or fracture under pressure and traction. The package includes four anti-tilt PU washers and a fifth-wheel lube plate, providing named accessories for the setup. The listing identifies a 3-inch raised model, a height consideration for buyers evaluating their trailer configuration.

Skip it if you need a 1.5-inch lift rather than a 3-inch raised model; springcraze lists the lower fixed lift.

This suits owners who want to switch towing modes without removing the hitch or modifying the bed, and who can use the listed 3-inch raised configuration. Its height and 2-5/16-inch ball are key fit considerations.

Listed on Amazon as: Fifth Wheel to Gooseneck Adapter, Kingpin to 2-5/16 Inch Gooseneck Ball, Converts Your Truck 5th Wheel Hitch for Gooseneck Towing Replaces #2085295, 4PCS Anti-tilt Washer and 1PCS Lube Plate Included

#4 · Highest Capacity

4. Stegewop ST-GBA-01

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Tractor, Trailer
• Material: Alloy Steel

Best for: Large-load tractor and trailer towing.

Why it ranks #4: Specifies a 2-5/16-inch gooseneck ball head and 30,000-pound maximum load, with compatibility listed for tractors and trailers.

A 30,000-pound maximum load and 2-5/16-inch ball head anchor the Stegewop adapter’s fit and capacity details, giving buyers two concrete points for evaluating a heavy towing setup. The listing names tractors and trailers as compatible vehicle types and cites alloy steel as its material.

The 2-5/16-inch ball head gives buyers a stated connection size to compare with their gooseneck hitch, while the 30,000-pound maximum load offers a listed capacity boundary. Stegewop names tractors and trailers as compatible vehicle types, broadening the stated application beyond one vehicle category. Alloy-steel construction is specified, and the product description names hauling large trailers, construction machinery, and livestock transport units as intended uses. The supplied facts do not state additional connection dimensions.

Skip it if you need a stated kingpin size as well as ball size; Misakomo specifies both connection dimensions.

This suits buyers seeking a 2-5/16-inch ball adapter for tractor or trailer towing, including the listed large-trailer and equipment uses. Its stated load limit is 30,000 pounds, but the kingpin dimension is not included in the supplied details.

Listed on Amazon as: Fifth Wheel to Gooseneck Adapter – 30,000 lbs Max Load Capacity

#5

5. Sidasu Heavy-Duty Adapter

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Truck
• Material: Alloy Steel

Best for: Weather-exposed 30,000-pound towing.

Why it ranks #5: Lists a 30,000-pound capacity and alloy-steel construction with a waterproof powder coating, though its warranty is only one month.

A stated 30,000-pound capacity paired with waterproof powder coating defines the Sidasu adapter, addressing both a listed load ceiling and exposure to wet weather. Its alloy-steel construction converts a fifth-wheel trailer connection to a gooseneck coupling for towing with semi-trucks or pickup trucks.

The 30,000-pound capacity gives buyers a specific rating to compare against their towing requirements, while alloy steel supplies the listed structural material. A black waterproof powder coating is described as resisting rust and wear in rain, snow, and wind, useful for weather-exposed operation. The adapter converts a fifth-wheel trailer connection to a gooseneck coupling, and the listing names semi-trucks and pickup trucks as compatible towing vehicles. Its supplied details do not state connection dimensions.

Skip it if you need specified kingpin and ball dimensions before choosing; Misakomo lists a 2-inch kingpin and 2-5/16-inch ball.

This suits buyers seeking a 30,000-pound-rated alloy-steel adapter for a fifth-wheel-to-gooseneck conversion, including weather-exposed towing. The supplied details do not specify connection dimensions, so it is not the clearest choice when those measurements must be verified from the listing.

Listed on Amazon as: Heavy-Duty 5th Wheel to Gooseneck Adapter, 30,000 lbs Capacity

#6

6. Misakomo Kingpin Adapter

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Truck, Tractor, Trailer
• Material: Alloy Steel

Best for: Forged-steel towing setups.

Why it ranks #6: Uses one-piece forged steel and lists a 2-inch kingpin with a 2-5/16-inch ball, but the supplied data gives no capacity rating.

One-piece machined forged steel is the Misakomo adapter’s defining feature, giving a kingpin-to-gooseneck connection a solid construction intended to resist breakage. Its stated 2-inch kingpin and 2-5/16-inch ball dimensions identify the connection sizes it serves, while a protective coating addresses exposure to weather and rust.

For buyers converting a fifth-wheel connection to a gooseneck ball, the 2-inch kingpin and 2-5/16-inch ball specifications provide concrete fit dimensions to compare with their setup. The forged-steel construction and one-piece machining are described as distributing force evenly and resisting breakage, which suits heavy towing demands. A protective coating is intended to resist rust in severe weather. The listing identifies truck, tractor, and trailer compatibility, but gives no towing-capacity figure in the supplied details.

Skip it if you need a stated maximum load rating; Nilight’s 30,000-pound capacity is explicitly listed for its adapter.

This suits buyers seeking a forged-steel adapter for a 2-inch kingpin and 2-5/16-inch gooseneck ball, especially where weather exposure matters. Its supplied details do not state a load rating, so it is a poor choice when that figure is essential.

Listed on Amazon as: Fifth Wheel to Gooseneck Adapter, Kingpin to Gooseneck Ball Hitch Adapter

#7 · Best Height Adjustment

7. Lamerto C5G1216

• Material Type: Stainless Steel
• Compatible with Vehicle Type: Car, Trailer, Truck
• Material: Stainless Steel

Best for: Height-adjustable cushioned RV towing.

Why it ranks #7: Offers 12-to-16-inch adjustable height, cushioning, and a safety chain, but its stated 20,000-pound GTW is below several alternatives.

Height adjustment from 12 to 16 inches distinguishes the Lamerto adapter, letting buyers set its body height using a sliding collar and set screws. Its built-in cushioning is specified to reduce towing shock and vibration, and a heavy-duty safety chain is included.

The 12-to-16-inch adjustment range and sliding collar with set screws allow height positioning and locking, useful when matching a camper, RV, or trailer kingpin box to a gooseneck ball. A built-in cushioning structure is intended to reduce shock and vibration, supporting steadier towing while protecting the kingpin and hitch. The safety chain adds a listed safety component, and installation is described as requiring no drilling or welding. The supplied details do not state a load rating.

Skip it if you require a stated 30,000-pound rating; Stegewop explicitly lists that maximum load for its adapter.

This suits RV and trailer owners who need 12-to-16-inch height adjustment, cushioning, and a safety chain without drilling or welding. Its supplied details do not state a capacity, so buyers should treat that as a key selection boundary.

Listed on Amazon as: C5G1216 12"-16" Adjustable Height Cushioned 5th Wheel to Gooseneck Adapter w/Safety Chain for Camper/RV/Trailer's Kingpin Box, Fifth Wheel to Gooseneck Coupler Towing Adapter, GTW 20000

#8

8. EXODIOS Round-Tube Adapter

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Tractor, Trailer, RV
• Material: Alloy Steel

Best for: Four-inch round-tube setups.

Why it ranks #8: Fits a 4-inch round tube and 2-inch kingpin, making it a specific-fit option; the supplied listing gives no load capacity.

Compatibility with a 4-inch round tube and 2-inch kingpin distinguishes the EXODIOS adapter, giving buyers two specific interface dimensions to match before converting a fifth-wheel setup. Its stated applications include semi-tractors, campers, trailers, and tractors, making it relevant across several named towing contexts.

The 4-inch round-tube and 2-inch kingpin compatibility narrows the fit question to two concrete measurements, useful when comparing the adapter with an existing towing setup. EXODIOS lists tractors, trailers, and RVs as compatible vehicle types, while its feature description also names semi-tractors and campers. The listing says the adapter can improve turning maneuverability, which may matter when positioning a trailer. Alloy-steel construction is specified, and a two-year manufacturer warranty is listed.

Skip it if you have a 4-inch square tube; springcraze lists an adapter specifically for that interface.

This fits buyers comparing a 4-inch round-tube, 2-inch-kingpin arrangement for an RV, trailer, tractor, or semi-tractor application. Its stated interface is specific, so buyers with a square tube or different dimensions should look elsewhere.

Listed on Amazon as: Fifth Wheel to Gooseneck Hitch Adapter with 4" Round Tube 2"

#9

9. springcraze SC01-1

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Truck
• Material: Alloy Steel

Best for: Four-inch square-tube towing.

Why it ranks #9: Lists a 30,000-pound capacity and alloy-steel construction, but its 4-inch square-tube fit limits it to matching installations.

The 4-inch square-tube interface is the defining fit detail for this springcraze adapter, giving buyers a specific tube shape and size to compare with their setup. Its title also states a 30,000-pound capacity, while the listed construction material is alloy steel.

A 4-inch square-tube interface makes this adapter relevant to buyers whose existing connection uses that particular shape and dimension, rather than a round tube. The title states a 30,000-pound capacity, providing a concrete rating to compare against the intended trailer load. Alloy steel is the listed material, and truck compatibility is specified. The supplied information does not include further fit dimensions or descriptive installation details, so the square-tube measurement is the central stated compatibility point.

Skip it if you have a 4-inch round tube; EXODIOS specifies compatibility with that round-tube interface.

This suits truck owners whose setup uses a 4-inch square tube and who need the 30,000-pound capacity stated in the title. The listed interface is specific; buyers with round tubing or other dimensions should consider a matching adapter instead.

Listed on Amazon as: Fifth Wheel to Gooseneck Adapter for 4" Square Tube,30,000 LBS Capacity

#10

10. Wallace Forge Adapter

• Material Type: Alloy Steel
• Compatible with Vehicle Type: Trailer
• Material: Alloy Steel

Best for: U.S.-made steel adapter.

Why it ranks #10: Its title describes a gooseneck-to-kingpin adapter, the opposite conversion direction from the kingpin-to-gooseneck options sought here.

Made in the U.S.A. is the Wallace Forge adapter’s clearest differentiator, giving buyers a specifically identified origin for a gooseneck-to-kingpin connection. Its listed alloy-steel construction and 32-pound weight provide basic material and handling information, though the supplied listing does not describe dimensions or a rated load.

The title identifies this as a gooseneck-to-kingpin adapter, so it addresses buyers seeking that connection direction rather than an unspecified towing accessory. Alloy steel is the listed material, and the 32-pound item weight gives a practical indication that moving and positioning it involves handling a substantial component. The available specifications identify trailer compatibility and U.S. manufacture, but provide no fit dimensions or towing-capacity figure to help assess a particular installation.

Skip it if you need explicit connection dimensions or a load rating; the Misakomo listing specifies its kingpin and ball sizes.

This is for buyers prioritizing a U.S.-made alloy-steel adapter for trailer use and who can assess fit through other available information. The 32-pound weight matters during handling, and the supplied details do not establish capacity or dimensions.

Listed on Amazon as: Gooseneck to Kingpin Adapter – Made in U.S.A