By MrTruck.  Popup-Hitch.com New FREE Shipping Pop Up Hitches Short bed truck solution for towing your gooseneck trailer, can help prevent breaking your truck’s rear window (picture left) with a gooseneck hitch extension with popup shortbed truck gooseneck extension. Call me for how to measure your truck bed. 303-883-1300 SB1, SB116, SB2 & SB3 Extension Coupler (round or square tube) … Continue reading Popup short-bed truck gooseneck extension to save your trucks rear window!