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Shocker Gooseneck Air Hitch & Shift Lock 9" Offset Coupler for 2-5/16" Ball

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$1,399.99
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Product essentials and key specifications, organized for a quick review.

Product overview

  • Built-in air ride for smoother gooseneck towing
  • 9" offset coupler for short-bed cab clearance
  • 30,000 lb dual-latching Shift Lock coupler
  • Patent-pending Round Multi-Fit stem

Key specifications

Length
17 in
Width
9 in
Height
29 in
Weight
97 lb

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Product details

Supporting product information.

The Shocker Gooseneck Air Hitch with Shift Lock 9" Offset Coupler adds instant air ride to your gooseneck hauling, delivering smoother, safer towing every mile. It's a patented air suspension system that completely replaces your gooseneck trailer's factory stem and coupler, using a built-in air spring bag and dual bump cushions to absorb the bumps, bangs, chucking, jerks, and tugs you normally feel when towing a gooseneck with a hard connection. The result is a much smoother, more controlled ride for you, your passengers, your animals, and your equipment, and less wear and tear on both your truck and trailer. The 9" offset Shift Lock coupler positions the ball 9 inches forward of the factory location for extra cab clearance, which is exactly what short-bed trucks and wide-front gooseneck trailers need.

It's the preferred air hitch for anyone towing gooseneck horse trailers, living-quarters trailers, stock trailers, and flatbeds, especially with a short-bed pickup, whether you tow occasionally or you're crossing the country to rodeos. The 30,000 lb Shift Lock coupler is the only gooseneck coupler that captures the ball on both sides, so you can see at a glance whether it's locked on, and its patent-pending Round Multi-Fit stem fits 4" or 100mm round trailer stems with straight or angled pin holes, so one system covers a wide range of trailers. It installs in minutes, is tunable for any load, and even helps save fuel. Made in the USA by Shocker Hitch in Jamestown, ND, it's the air ride upgrade your gooseneck trailer (and your horses) will thank you for.

Key Features
  • Built-in air ride for smoother gooseneck towing – A built-in air spring bag, dual external bump cushions, and an internal bump inside the air spring absorb the bumps, bangs, chucking, jerks, and tugs of gooseneck towing for a much smoother, safer ride and less wear on truck and trailer.
  • 9" offset coupler for short-bed cab clearance – The Shift Lock coupler is positioned 9 inches forward of the factory location, giving short-bed trucks and wide-front gooseneck trailers the extra cab clearance they need, with 3 height adjustment holes.
  • 30,000 lb dual-latching Shift Lock coupler – Rated for 30,000 lbs. GTW / 6,000 lbs. tongue weight, the Shift Lock is the only gooseneck coupler that captures the ball on both sides, with an easy handle and an at-a-glance locked indication for confidence and security (patent #11,370,257 B1).
  • Patent-pending Round Multi-Fit stem – Fits 4" or 100mm (3-15/16") round inner tube stems with straight or angled pin holes (up to 30 degrees), so one stem covers a wide range of gooseneck trailers.

Features & Benefits

The heart of the system is Shocker's rocker arm pivot design, which is engineered specifically for the way a gooseneck trailer moves. It produces a front-and-back motion, and that fore-aft jerk is the biggest and most fatiguing motion you feel when towing a gooseneck. By filtering, dampening, and absorbing that motion through the built-in air ride system, dual external bump cushions, and an internal bump inside the air spring bag, the Shocker delivers heavy-duty yet very smooth performance and eliminates the jerks, bucking, bangs, and chucking of a hard connection. It's tested, trusted, and proven to work better than other cushion hitches, and Shocker's design does it without the parallel linkages, shock absorbers, torsion arms, and other over-engineered gadgets other hitches rely on.

The benefits are real and wide-ranging. Because the air ride absorbs the damaging forces of a hard connection, it reduces stress, wear, tear, and breakage on your truck's driveline and frame, your trailer's welds, and your cargo, while making the ride dramatically less stressful for you, your passengers, and your animals. That last point matters to horse and livestock owners: your animals experience a smoother, calmer ride, which is why this is the preferred air hitch for gooseneck horse trailers. The smoother connection also gives you improved control and comfort, making towing safer, and customers report saving one mile or more per gallon on fuel.

The Shift Lock coupler and Multi-Fit stem are what make it both secure and versatile. The 30,000 lb Shift Lock coupler is the only gooseneck coupler that captures the ball on both sides, with an easy-to-use handle for hooking up and disconnecting and a clear, at-a-glance indication that it's locked on the ball. The 9" offset built into this version extends the coupler 9 inches forward (with 3 height adjustment holes), giving the cab clearance that short-bed trucks and wide-front trailers need. The system mounts on Shocker's patent-pending Round Multi-Fit stem, a thick-wall, heavy-duty stem that fits 4" or 100mm (3-15/16") round inner tube stems with straight or angled pin holes up to 30 degrees, so it adapts to a wide range of trailers. The air ride sits in front of the gooseneck hitch and out of the way, and it's fully tunable: just add air for heavier loads to dial in the best ride and load control (patent #11,370,257 B1, with additional patents pending).

Installation & Air Setup

  • What it replaces: The system completely replaces your gooseneck trailer's factory inner tube stem and coupler with the Gooseneck Surge air system and Shift Lock coupler. It installs in minutes.
  • Stem fitment (important): You must know your trailer's stem type. The Round Multi-Fit stem fits 4" or 100mm (3-15/16") round inner tube stems with straight or angled pin holes. Angled holes are typically 10-20 degrees on a 4" round stem and 20-30 degrees on a 100mm stem; the Multi-Fit stem's holes accommodate all of these (top hole for 4"/10-20 degrees, middle for 100mm/20-30 degrees, bottom for straight pins).
  • Mounting: Slide the Multi-Fit stem into the trailer tube to the desired hole and secure with the 3/4" pin. On the 9" offset black frame, the air bag faces the vehicle cab / trailer front. Tighten the trailer set bolt(s) and jam nut(s) first, then the Multi-Fit stem set bolt and jam nut. Torque the locking set bolt(s) to the trailer manufacturer's spec or 125 ft-lbs. Do not tow if the hitch is crooked.
  • Air pressure setup: Start at about 15 PSI if unloaded or a lighter trailer, or 25 PSI for a heavy-duty or loaded trailer. Test drive and adjust in 5 PSI increments until optimal. High winds may require added PSI. NEVER exceed 100 PSI, as this will damage the air spring bag.
  • Lubrication: Before hooking up, lubricate the coupler u-bolt and gooseneck ball. Grease the hitch ball and the pivot bolt regularly using the grease zerk on the base of the stem (every 6-12 months depending on usage) to reduce wear.

Downloadable setup guides, dimension diagrams, an installation video, and a round-stem angle/sizing guide are available.

What's Included
  • (1) Complete Shocker Gooseneck Surge air hitch with built-in air ride system and dual bump cushions
  • (1) Replacement Round Multi-Fit inner tube stem (fits 4" or 100mm round stems, straight or angled pin holes)
  • (1) 30,000 lb dual-latching Shift Lock 9" offset gooseneck coupler for a 2-5/16" ball (3 height adjustment holes)
  • Mounting hardware (pin, set bolts) and installation instructions
*Optional coupler locks (sold separately): box-style coupler & set bolt lock kit SH-GK30P-400GL-BLK; box-style coupler lock SH-GK340P-BLK; puck-lock-style coupler lock SH-9000-350; set bolt lock SH-400GL-ISP-BLK. Confirm your stem type and pin-hole angle before ordering.*

Care & Maintenance
A little routine care keeps your gooseneck air hitch performing smoothly and safely:
  • Grease the ball and pivot bolt: Lubricate the gooseneck ball and coupler u-bolt before hooking up and grease the pivot bolt using the grease zerk on the base of the stem every 6-12 months (based on usage) to reduce wear.
  • Set and check air pressure: Keep the air pressure tuned to your load (starting around 15 PSI unloaded / 25 PSI loaded, adjusted in 5 PSI increments). Never exceed 100 PSI.
  • Inspect before towing: Confirm the Shift Lock coupler is fully captured and locked on the ball (check the at-a-glance indicator), the stem is straight (never tow crooked), and the set bolts are torqued to spec.
  • Keep it clean: Rinse off road salt, mud, and grime periodically, especially after winter or coastal driving, to protect the finish and hardware.
  • Check the air system: Periodically inspect the air spring bag, bump cushions, and fittings for wear or damage.
  • Storage: Keep the coupler and stem clean and protected from the weather when not in use.

Warranty
Shocker Hitch products are backed by the manufacturer's warranty against defects in materials and workmanship under normal use.
  • Typically covered: Manufacturing defects in materials and workmanship under normal, intended use.
  • Typically not covered: Damage from misuse, exceeding rated capacities, exceeding 100 PSI, improper installation, towing while crooked, accident, modification, and normal wear.
  • Registration: No registration typically required; keep your proof of purchase.
*Warranty terms and duration can vary; confirm the exact coverage with Shocker Hitch or your point of purchase before publishing. Made in the USA by Shocker Hitch in Jamestown, ND.*

Terms to Know
  • Gooseneck hitch: A hitch that connects a trailer's gooseneck coupler to a ball mounted in the truck bed (over the rear axle), used for heavy trailers like horse, stock, flatbed, and living-quarters trailers.
  • Gooseneck stem / inner tube stem: The vertical tube that slides into the trailer's gooseneck and holds the coupler; this system replaces the factory stem with Shocker's Round Multi-Fit stem.
  • Round Multi-Fit stem: Shocker's patent-pending stem that fits both 4" and 100mm (3-15/16") round inner tube stems with straight or angled pin holes (up to 30 degrees).
  • Shift Lock coupler: Shocker's dual-latching gooseneck coupler that captures the ball on both sides, with an at-a-glance locked indicator; rated 30,000 lbs on the 2-5/16" ball.
  • 9" offset coupler: A coupler extended 9 inches forward of the factory location for extra cab clearance, useful for short-bed trucks and wide-front trailers.
  • Air ride/air spring bag: The built-in inflatable suspension that cushions the tow; its pressure is adjustable for the load (never over 100 PSI).
  • Rocker arm pivot design: Shocker's design that absorbs the front-and-back motion (the biggest jerk in gooseneck towing) without linkages, shocks, or torsion arms.
  • Bump cushions: Dual external urethane cushions, plus an internal bump inside the air spring, that add shock absorption.
  • Grease zerk: The fitting on the base of the stem used to grease the pivot bolt.
  • GTW/TW: Gross Trailer Weight (30,000 lbs) and Tongue Weight (6,000 lbs on this 9" offset coupler).
  • Pin holes (straight vs. angled): How the safety pin passes through the round stem, straight across, or angled 10-30 degrees; the Multi-Fit stem fits all of them.

Specs at a Glance
  • Type - Gooseneck Surge air ride hitch (replaces factory stem & coupler) 
  • Coupler - 30,000 lb dual-latching Shift Lock, 9" offset, for 2-5/16" ball 
  • Gross Trailer Weight (GTW) - 30,000 lbs 
  • Tongue Weight (TW) - 6,000 lbs (9" offset coupler) 
  • Coupler offset - 9" forward; 3 height adjustment holes 
  • Stem - Patent-pending Round Multi-Fit; fits 4" or 100mm (3-15/16") round, straight or angled pin holes (to 30 degrees) 
  • Air system - Built-in air spring bag, dual external bump cushions + internal bump 
  • Air pressure - Start 15 PSI (unloaded) / 25 PSI (loaded); adjust in 5 PSI steps; never exceed 100 PSI 
  • Pivot design - Rocker arm, front-and-back motion 
  • Lubrication - Grease ball and pivot bolt (grease zerk on stem base) every 6-12 months 
  • Made in USA (Jamestown, ND) 

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Safety & compliance

WARNING: Some products may contain chemicals such as DEHP, which can cause cancer, birth defects or other reproductive harm. For more info go to www.p65warnings.ca.gov