Shocker Shift Lock Gooseneck Stem & Shift Lock Coupler for 3" Ball, 4.5" Square Straight Pin Black

Heavy-duty 40,000 lb square gooseneck stem coupler for 3" gooseneck ball with adjustable inner tube stem. Inner square tube replacement gooseneck stem & coupler. Replacement square stem & coupler for gooseneck trailers. The Shift Lock® gooseneck coupler by Shocker Hitch is now available with a direct replacement inner tube square stem with Shift Lock coupler. Upgrade your gooseneck trailer with the easy to use, patented dual latching Shift Lock coupler for gooseneck trailers. It is rated at 40,000 lbs rated and is the only gooseneck coupler that captures ball on both sides. Plus, at a glance, you can gooseneck balls. We have a solution. Our Shift Lock Coupler is easy, fast, and safe. We use dual latching simple sliding rods made with alloy steel to lock the ball in place. Works great on gooseneck style trailers; dumps, flatbed, horse, race trailers and more. Completely replaces your factory stem & coupler with a replacement square stem & Shift Lock coupler. Installs in minutes. The Shift Lock coupler is also available on all Gooseneck Air Hitches. Patent # 11,370,257 B1California Residents: Prop 65 Warning

• Heavy Duty Square Inner Stem with 3" Gooseneck Ball Coupler, Thick Walled Replacement gooseneck stem & coupler - Inner Tube Stem with Coupler. (Optional Gooseneck Locks: Coupler lock for shift lock gooseneck, part #SH-GK340P-BLK and set bolt locks, part # SH-400GL-ISP-BLK�available & sold separately).
• 40K Shift Lock® Dual Latching Coupler: Patented, game changing Gooseneck coupler design. Dual latching, captures both sides of ball. Easy to use handle & see if it's latched at a glance. Patent #'s 11,370,257
• Extra Plating for Welded Stem & Coupler Connection: Additional plating to weld coupler to stem for long term strength and durability. Replacement Stem & Coupler fits 3" gooseneck hitch balls & has 4 Height Adjustment. Adjustment Holes are 2-3/4" apart. Choose Raw Steel or Impact resistant matte black powder coat finish.
• 40,000 lbs towing & 8,000 lbs tongue weight rating. 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.
• Inner Tube Stem Size: 4.5" Square Straight Pin - Finish: Black - Fits 4-1/2" Square Stem with Straight Pin Holes - Includes complete replacement gooseneck inner stem & 40k shift lock gooseneck coupler for 3 inch ball. Made in the USA by Shocker Hitch Jamestown, North Dakota. (Optional Outer Gooseneck Square Sleeve Tube: Does not include weld on outer gooseneck square sleeve tube. They are sold separately.)