• Round Gooseneck Outer Sleeve & Inner Stem with 2-5/16″ Shift Lock® Gooseneck Coupler: Includes a 4.5″ OD round weld-on outer sleeve with a 100mm (3-15/16″) round inner tube stem with straight pin holes.
• Weld-on Thick-Wall 4.5″ OD Round Outer Gooseneck Sleeve: 20″ tall thick-wall tube steel with a reinforced heavy-duty collar at the lower neck for additional strength. Has 3/4″ diameter straight left-to-right pin holes with 2 set bolts & jam nuts.
• Used by Gooseneck Trailer Manufacturers: This is a heavy-duty weld-on neck that gooseneck trailer manufacturers use. It comes in raw steel, and the tube is designed to be welded onto the front of a gooseneck trailer.
• Cap Top To Keep The Elements Out: Top sleeve is capped to prevent water and debris accumulation.
• Heavy-Duty Thick-Wall Round Inner Stem with Extra Plating: Built by welding thick-walled round tubing and heavy-duty plate to weld the coupler to the stem for long-term strength and durability.
• Dual Latching Patented 30K Shift Lock® Gooseneck Coupler for 2-5/16″ Ball: Patented, game-changing design. Dual latching captures both sides of the ball. Easy-to-use handle & see if it’s latched at a glance. Patent #’s 11,370,257 B1.
• 30,000 lbs GTW Towing & 6,000 lbs Tongue Weight Capacity: Built for years of service for heavy-duty gooseneck hauling.
• Inner Stem has 4 Adjustment Holes: Stem has 4 adjustment holes that are 2-3/4″ apart.
• Raw Steel Finish: Outer sleeve, inner stem & coupler come in raw steel so you can paint it yourself to match your trailer.
• Round Gooseneck Outer Sleeve & Inner Stem Kit Includes: Weld-on 4.5″ OD round outer sleeve tube that is 20″ in height with 2 set bolts, jam nuts & 3/4″ diameter safety through pin & clip, along with the 100mm (3-15/16″) round inner tube gooseneck stem & 30K Shift Lock® coupler for 2-5/16″ gooseneck ball.
• Professional Welding Required for Installation: Professional welding is required for proper installation and weight rating.
• Optional Shift Lock Gooseneck Locks: Box-style coupler & set bolt lock kit is part # SH-GK30P-400GL-BLK. Box style coupler lock is SH-GK340P-BLK. Puck lock style coupler lock is: SH-9000-350. Set bolt lock, part # SH-400GL-ISP-BLK, is available and sold separately.
• Want Air Ride on Your Gooseneck? The Shift Lock coupler is also available on all Gooseneck Surge Air Hitches.
• Not sure what size round gooseneck stem you have? See our gooseneck stem selection guide.
• Safety Note: Towing capacity is limited by the lowest-rated component.

Gooseneck Trailer Towing FAQ

• Type of Round Gooseneck Stems
• Do I Need an Offset Gooseneck Coupler?
• Advantages of Air Hitches
• Gooseneck Trailer Chucking
• Do I Have a Gooseneck or 5th Wheel?
• What is Towing Capacity?
• Shocker Gooseneck Hitch Uses
• Types of Trailers for Towing with a Pickup Truck
• Types of Gooseneck Balls
• Why Grease Your Hitch Ball?
• How to Back Up a Gooseneck Trailer?
• How To Level a Trailer
• How To Fix Truck Squatting

Weld on raw steel round gooseneck outer sleeve, inner stem & Shift Lock® coupler set for a 2-5/16″ gooseneck ball. The thick-walled 4.5″ OD round outer tube stem neck is matched with a 100mm (3-15/16″) round inner gooseneck stem with straight pin holes. This is a heavy-duty weld-on neck that gooseneck trailer manufacturers use. It comes in raw steel, and the tube is designed to be welded onto the front of a gooseneck trailer. The outer sleeve is 20″ in height with 3/4″ diameter pin holes, 2 sets of bolts and jam nuts, along with a safety through pin with clip. The lower collar adds strength, and the top is capped to prevent water and debris buildup. The inner stem is built by welding thick-walled round tubing and heavy-duty plate to ensure long-term coupler-to-stem strength and durability, and has 4 adjustment holes 2-3/4″ apart.

4.5″ Outer Diameter Round Weld-On Outer Sleeve with 100mm (3-15/16″) Round Inner Tube Stem with Straight Pin Holes.

The patented dual-latching Shift Lock® gooseneck coupler makes it easy to see if you are locked onto the ball at a glance. This is rated at 30,000 lbs. Gross Towing Weight, and 6,000 lbs. tongue weight and is the only gooseneck coupler that captures the ball on both sides. The Shift Lock handle makes it super easy to hook up and disconnect the gooseneck coupler from the ball. Our Shift Lock Coupler is easy, fast, and safe. We use dual-latching, simple sliding rods made with alloy steel to lock the ball in place. Raw steel, so you can paint it yourself to match your trailer. Works great on gooseneck-style trailers; dumps, flatbed, horse, race trailers, and more. Professional welding is required to weld the outer tube to the gooseneck tongue. Manufactured by Shocker Hitch.

Patent # 11,370,257 B1

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