• Round Gooseneck Outer Sleeve & Inner Stem with 9″ Offset Shift Lock® Coupler for 2-5/16″ Ball: Includes a 4.5″ OD round weld on outer sleeve with a 100mm (3-15/16″) round inner tube stem with straight pin holes.
• Adds 9″ of Forward Offset for Increased Cab & Trailer Clearance: Offset gooseneck coupler extends the coupler 9″ forward, which is ideal for short bed trucks pulling gooseneck trailers or when extra cab clearance is needed.
• Heavy Duty Thick Wall Stem, Dual Gusset Supports & Collar Plating for Superior Strength: Offset extender gooseneck coupler is built super strong because of thicker tubing, extra gusseting, precision engineered and heavy-duty welds.
• 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.
• Dual Latching Patented 30K Shift Lock® Gooseneck Coupler for 2-5/16″ Ball: Patented, game changing design. Dual latching captures both sides of 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 the 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 & Shift Lock® 9″ offset 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 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 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 Trailer
• How To Fix Truck Squatting

Weld on raw steel round gooseneck outer sleeve, inner stem & Shift Lock® 9″ offset coupler set for a 2-5/16″ gooseneck ball. Extends your gooseneck trailer coupler hookup 9″ forward. Great for short bed pickup trucks pulling gooseneck trailers or for when extra cab clearance is needed. The thick wall 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 set bolts and jam nuts along with a safety through pin with clip. Lower collar offers additional strength and the top is capped to prevent water and debris accumulation. The offset extender gooseneck coupler features heavy duty thick wall inner tube, dual gusset supports and top collar steel for the gooseneck coupler making it super strong with 30,000 lbs GTW & 6,000 lbs tongue weight. The inner stem 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. It 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. 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 for welding the outer tube to the gooseneck tongue. Manufactured by Shocker Hitch.

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