Shocker Gooseneck Air Hitch for Doolittle Trailers

• Safer Smoother Towing: Improves your ride, easier on you, your equipment, plus reduces wear & tear on pickup & trailer. Built-in air ride system for a smoother towing experience. Just add air depending on the weight of your trailer and its’ contents. An air spring bag is simply the best cushion device on the planet.
• Easy Install in Minutes: Completely replaces your factory gooseneck stem & coupler with Gooseneck Surge® Air System & Coupler. Installs in Minutes.
• Shock Dampening & Absorbing Action: Effectively absorbs the jerking, tugging, bumps and damaging forces experienced when towing on rough roads & concrete highway with a typical hard connection. Built in air ride system along dual external  bump cushions, plus internal bump inside of air spring bag offer heavy duty, yet very smooth performance.
• Easier on You & Your Equipment: The smoother towing you get makes it easier on you, your passengers, cargo and trailer. The patented design filters the natural tugs between trailer and pickup giving you more control and comfort towing a gooseneck trailer.
• Adjustable for Tow Weight: The Air Ride System sits behind your gooseneck hitch and out of the way. You will find the advantage of the Gooseneck Air Shocker is your ability to adjust air pressure for best ride and load control. View our Shocker PSI Air Pressure tuning guide. Heavy loads, just add air pressure.
• 30,000 lbs Tow & 7,000 lbs tongue weight: Patented 30,000 lbs dual latching Shift Lock™ coupler for 2-5/16″ gooseneck ball. 9″ offset coupler has 6,000 lbs tongue weight.
• Fits 2-5/16″ gooseneck hitch balls: & has 3 height adjustment holes. (Standard coupler extends 3″ forward from your factory coupler or choose 9″ extension coupler when extra cab clearance is needed or you’re towing with gooseneck trailer with a short bed pickup truck).
• Patented Shift Lock™ Coupler: 30,000 lbs rated, patented gooseneck coupler. The only gooseneck coupler that captures ball on both sides. At a glance, you can see if the coupler is locked on the ball. Easy to use handle to hook up and disconnect the coupler from the ball.  Patent #’s 11,370,257 B1 & D898,628.
• Gooseneck Air Hitch System Includes: Complete Shocker Gooseneck Surge® air hitch with built in air ride system & dual bump cushions, replacement inner tube stem & 30,000 lb Shift Lock™ gooseneck coupler for 2-5/16″ ball.
• Improves Safety: By giving you improved control of your tow vehicle and trailer. The Gooseneck surge air hitch system allows for better control of your pickup and the trailer it is towing.
• Adds Life To Your Vehicle & Gooseneck: By reducing wear and tear on driveline and frame! Treat yourself, your equipment, and your passengers to a much smoother ride. You’ll never go back to the ‘old days’ of continual bumps, jerks, and vibrations.
• Custom Fit Thick Wall Heavy Duty Stem Options: Doolittle trailers either have a 4″ round gooseneck stem with straight holes for pin or 100mm (3-15/16″) stem with angled / slotted holes for pin.  Up to 2018 for 100mm and after 2018 for 4″ round. Or choose the new patent pending round multi-fit stem option that fits both. Not sure what size round gooseneck stem you have? Check out our gooseneck stem selection guide.
• Simple Pivot Design: Uses a rocker arm pivot design which produces a front and back motion, much different than other cushion hitches on the market. Our design eliminates the need for parallel linkages, shock absorbers, torsion arms, and other over engineered gadgets.
• Saves Fuel: Customers using the gooseneck air hitch report saving one mile or more per gallon.
• Optional Gooseneck Locks: Box style coupler & set bolt lock kit is part # SH-GK30P-400GL-BLK. Box style coupler lock is SH-GK340P-BLK. Pad lock coupler style is: SH-9000-Lock. Handle style coupler lock is SH-651P  and set bolt lock, part # SH-400GL-ISP-BLK available and sold separately.
• Order by Trailer Manufacture: Find your Gooseneck Surge Air Hitch by Trailer Brand.
• Not sure what size round gooseneck stem you have? See our gooseneck stem selection guide.
• Got a Short Bed Pickup? Check out our all new Gooseneck air hitch with 9″ extender coupler. If you have a gooseneck trailer 3″ goose ball, check out our 40,000 lb gooseneck air hitch with 3″ ball coupler.
• Safety Note: Towing capacity is limited by lowest rated component.

Round Tube Pin & Sizing Guide