Shocker Hitch — Air Ride Towing Hitches
ProductsDEM-35SQ-BLK
Shocker 30K Gooseneck Stem & EZ Latch Decmo Coupler - Square Blank Stem - Black

Shocker Gooseneck Stem & Demco Coupler for 2-5/16" Ball - Square 3.5" Blank (No Pin), Black – Square 3.5″ Blank (No Pin), Black

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$531.18

$684.73 save $153.55

or as low as $45/mo with flexible financing — 4, 6, or 12 months. Options at checkout.

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Patent #11,370,25720,000+ Customers
Download Installation Guide(PDF)

Heavy Duty thick wall design stem

Available for 100mm & 4" Round, 100mm & 4" Square, 4.5" Square & Top crank style gooseneck stems.

30K Auto Latching Demco Coupler

EZ auto latching demco coupler for 2-5/16" gooseneck ball. Flip up to unhook, flip down and set onto gooseneck ball to auto latch.

Easy Installation

Includes complete replacement inner tube gooseneck stem & demco ez latch coupler. (Does not include outer gooseneck tube).

Not sure what size round

gooseneck stem you have? Check out our gooseneck stem selection guide.

Stop destroying your trailer and cargo.

Every bump, pothole, and expansion joint sends a violent jolt through your trailer frame, damaging cargo and wearing out your truck. Shocker Air Ride Hitches absorb that punishment at the coupling, before it reaches your trailer.

Upgrade your gooseneck trailer with a replacement thick walled Shocker 30,000 lb gooseneck stem with Demco coupler for 2-5/16" gooseneck ball, featuring an adjustable inner tube stem that is welded to the coupler with extra plating for long term strength. Inner tube replacement gooseneck stem & EZ latch auto-latching Demco coupler come in Textured Black Finish and ready to install. Square stem & Demco auto-latching gooseneck coupler from Shocker Hitch is now available with a direct replacement inner tube stem for your gooseneck trailer. Fits Gooseneck Trailers with a 3-1/2″ Square Stem and Uses Gooseneck Set Bolt(s) to Secure. Upgrade your gooseneck trailer with the easy to use, automatically latching Demco coupler for gooseneck trailers. The EZ latch design flipped up when you want to unhook it from your gooseneck trailer and just flips back down when you want to hook it up, and it will automatically latch. Works great on gooseneck style trailers; dumps, flatbed, horse, race trailers, and more. Completely replaces your factory stem & coupler with a replacement stem & Demco goose coupler. Installs in minutes.

  • Installs in minutes: Completely replaces your factory inner tube stem & coupler.
  • Heavy Duty thick wall design stem: Available for 100mm & 4" Round, 100mm & 4" Square, 4.5" Square & Top crank style gooseneck stems.
  • 30K Auto Latching Demco Coupler: EZ auto latching demco coupler for 2-5/16" gooseneck ball. Flip up to unhook, flip down and set onto gooseneck ball to auto latch.
  • 30,000 lbs towing & 6,000 lbs tongue weight capacity: Built for the heavy duty gooseneck hauling.
  • Matte Black Powder Coat: Impact resistant matte black powder coat finish.
  • Fits 2-5/16" gooseneck hitch balls: Gooseneck couplers for 3" ball available separately.
  • 4 Adjustment Holes: Stems with holes have 4 adjustment holes that holes are 2-3/4" apart.
  • Easy Installation: Includes complete replacement inner tube gooseneck stem & demco ez latch coupler. (Does not include outer gooseneck tube).
  • Includes Both Stem & Gooseneck Coupler: Includes complete replacement inner tube gooseneck stem & demco coupler.
  • Optional Gooseneck Locks: Coupler lock for demco gooseneck coupler, part #DEM-17654-81 and set bolt lock, part # SH-400GL-ISP-BLK available and sold separately.
  • Optional Outer Gooseneck Sleeve/Tube: Does not include weld on outer gooseneck sleeve tube. They are sold separately.
  • Not sure what size round gooseneck stem you have? Check out our gooseneck stem selection guide.

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  • 1-Year Manufacturer Warranty
  • 60-Day Returns
  • 20,000+ Customers
  • Ships from Canada