Product Description
- Weld-on Square Outer tube stem sleeve for gooseneck couplers.
- Commonly used by Gooseneck trailer manufacturers.
- Thick-wall steel that is fabricated from a formed 1/4″ ASTM A572 GR50 made steel plate.
- Reinforce the heavy-duty collar at the lower neck for additional strength.
- Precision tolerance to fit existing inner tube square gooseneck couplers.
- 20″ Height with through pin hole, 2 set bolts with jam nuts, along with through pin & clip.
- Increased security & strength with two 3/4″ set bolts with jam nuts. Gooseneck 3/4″ diameter through pin & clip included with 4.5″ OD / 4″ ID & 1″ diameter through pin & clip included with 5″ OD / 4.5″ ID. Diamond C style does not have a through pin but uses bolts.
- 40,000 lbs GTW. Professional welding required.
- 2 Sizes to Choose From: 4.5″ OD Sleeve to fit 4″ Square Gooseneck coupler with straight pinhole or 5″ OD to fit 4.5″ Square Gooseneck coupler with straight pinhole.
- Professional Welding Required for Installation: Professional welding is required for proper installation and weight rating.
- Top sleeve is capped to prevent water and debris accumulation.
- Raw Steel Finish. Made in the USA.
- Can be welded onto a gooseneck trailer with set bolts in the front or the back.
- Looking for a gooseneck coupler? Check out our Shocker Gooseneck Couplers.
The weld on thick wall outer tube square stem neck for a gooseneck coupler is available in 4″ and pin hole or 4.5″ with pin hole. It is rated up to 40,000 lbs of gooseneck towing capacity. This is a Heavy Duty neck that gooseneck trailer manufacturers often use. It comes in raw steel, and the sleeve tube is designed to be welded onto the front of a gooseneck trailer. Lower collar offers additional strength. These square outer gooseneck coupler sleeves are fabricated from thick-walled, formed 1/4″ steel, with precision tolerance. Dual set bolts offer additional strength and are secured. Available and designed to fit existing 4″ or 4.5″ gooseneck couplers with square inner tube stems. The top sleeve is capped to prevent water and debris accumulation. Can be welded onto a gooseneck trailer with set bolts in the front or the back. They are 20″ in height and include 3/4″ set screws and jam nuts. Does not include inner tube gooseneck coupler. Professional welding is required for welding the square tube for the gooseneck tongue. Manufactured by Shocker Hitch USA.
Looking for a gooseneck hitch & coupler? Check out our Shocker Gooseneck Hitches & Couplers.









































Service a people I spoke to on the phone were the best I have delt with in years!
All in all pretty haply!