Shocker Gooseneck Surge Air Hitch & KingPin
Rated for your tow
30,000 lbs GTW · 7,000 lbs TW· 30,000 lbs GTW · 7,000 lbs TW
$2,183.98
$2,284.78 save $100.80
or as low as $182/mo with flexible financing — 4, 6, or 12 months. Options at checkout.
Easy Install
Completely replaces your factory gooseneck stem & coupler with Gooseneck Surge Air System with King Pin. Installs in Minutes.
Fits Low Profile 5th Wheel Plates
& has 3 height adjustment holes. (Standard King Pin extends 3" forward from your factory King Pin)
Gooseneck Air Hitch to King Pin
Designed for low-profile 5th wheel plates like on flatbed trucks. Not for use with camper 5th wheel plate.
30,000 lbs Tow & 7,000 lbs tongue weight
With the ability to adjust air pressure for the best ride and load control. Heavy loads, just add air.
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.
Pull a gooseneck trailer behind a flatbed truck or semi and you feel it fast: commercial suspensions are built stiff to haul weight, not to ride soft, so every frost heave and hard stop slams forward-back through the coupler and wears on your truck, your trailer, and your load. The Surge Air Gooseneck Kingpin Conversion 30K takes that jerk out of the equation. It swaps your trailer's ball coupler for a King Pin socket that drops onto the sliding jaws of a low-profile commercial 5th-wheel plate, with a patented air spring in the middle soaking up the chucking. It carries 30,000 lbs GTW and 7,000 lbs of tongue weight, real breathing room when the load rides heavy up front. One thing to be dead sure of before you buy: this is for low-profile commercial plates only, not for camper or RV 5th-wheel hitches.
Key Highlights
- 30,000 lbs GTW and 7,000 lbs of tongue weight, room to haul heavy up front without sweating the numbers
- The ball coupler comes off and a forged King Pin socket goes on, sized to lock into standard 5th-wheel jaws
- Built for the low-profile commercial plates on flatbed trucks and semis
- Not for camper or RV 5th-wheel hitches, which sit taller and use different geometry, so this will not fit
- The same patented forward-back air spring as the Standard 30K, soaking up the jerk
- The multi-fit-round drops into your trailer's factory inner stem spot in minutes
- 3 height holes to set ride height, and it extends 3" forward of the factory location
- In stock in Canada and shipping direct, so you skip the border wait
What's Included
- Shocker Gooseneck Surge Air Hitch assembly with built-in air ride and dual bump cushions
- multi-fit-round replacement inner tube stem
- King Pin kingpin socket assembly
- Schrader air valve
- Installation instructions
Not Included
- —5th-wheel plate (must already be installed on the truck)
- —Air compressor or pressure gauge (sold separately)
- —Ball coupler (this product replaces it; not a dual-purpose part)
Installation
Watch the official install walkthrough for this hitch — the exact steps and tools, straight from the manufacturer.
Gooseneck Trailer Meets 5th-Wheel Truck
This one is for a specific setup. You have a gooseneck trailer with a square or round inner stem, and you tow with a flatbed truck or semi that already runs a low-profile commercial 5th-wheel plate. Instead of welding a gooseneck ball onto your flatbed, you pull your trailer's inner stem and slide in the Shocker multi-fit-round with a King Pin socket. Now your gooseneck trailer drops onto the same 5th-wheel jaws a semi trailer uses, and the Shocker air ride sits in the middle eating up the forward-back jerk that stiff flatbed and semi suspensions push straight through.
Read This Before You Order: Plate Compatibility
This kingpin conversion is built for LOW-PROFILE COMMERCIAL 5th-wheel plates only. Those are the flat steel plates with sliding jaws you see bolted to flatbed trucks and semi tractors. It does not work with camper-style or RV 5th-wheel hitches (Reese, B&W, Curt, Andersen, and the like), because those sit higher off the truck bed and use different geometry. If your truck has a tall RV-style 5th-wheel hitch in the bed for pulling a fifth wheel camper, this is the wrong product for you. RV 5th-wheel users should look at the Quick Air Gooseneck or 5th-wheel air-ride conversion families instead.
Air Ride for Trucks That Run Both Gooseneck and 5th-Wheel
King Pin Replaces the Ball Coupler
The factory ball coupler comes off completely, and a forged kingpin socket takes its place, sized to lock into standard commercial 5th-wheel jaws.
Airbag That Kills the Forward-Back Jerk
The same patented surge-air setup as the Standard 30K. The air spring sits between the inner stem and the kingpin, soaking up the forward-back jerk that stiff commercial truck suspensions make worse.
30,000 lb Capacity
Built to the same 30,000 lbs GTW as the standard ball-coupler 30K, with a 7,000 lb tongue weight rating that handles heavy commercial flatbed loads.
Drops Into Your Trailer's Outer Tube
The multi-fit-round replaces the factory inner stem right in your gooseneck trailer's outer tube. Nothing changes on the truck side, and your existing 5th-wheel plate stays exactly as it is.
Built for Commercial Flatbed and Semi Operators
A niche product built for one specific job.
- Flatbed operators running a low-profile 5th-wheel plate
- Semi tractor owners who also pull gooseneck equipment trailers
- Hotshot haulers with mixed gooseneck and 5th-wheel fleets
- Drivers who want one truck to pull both trailer types
- Industrial transporters on low-profile commercial fifth wheels
Stem Options
Same chassis, same King Pin, three inner stem shapes to match your trailer.
Multi-Fit Round (4" or 100mm)
Patent-pending round stem that fits both 4" and 100mm round outer tubes, with straight or angled pin holes.
Multi-Fit Square (4" or 100mm)
Fits both 4" and 100mm square inner tubes with straight pin holes, the most common modern square stem.
4-1/2" Square Stem
Heavy-wall stem for trailers running the larger 4-1/2" square inner tube, common on heavy-duty builds.
$2,183.98
Still researching?
Skip the product wall — these are the four guides every buyer actually opens before they decide.
Installation Guide
Step-by-step videos for every Shocker family. What's in the box, what tools you need, and how long it takes.
Watch the installAir Pressure Setup
How to dial in air pressure by trailer weight so the ride is right the first time and the hitch lasts longer.
See psi by loadTowing Capacity Guide
Match GTW, tongue weight, and receiver size to your truck class so you don't over- or under-buy.
Read the guideConfigure Your Hitch
60-second fit quiz — answer a few questions about your truck and trailer, get a tailored recommendation.
Start the quiz
- 1-Year Manufacturer Warranty
- 60-Day Returns
- 20,000+ Customers
- Ships from Canada