{"product_id":"demco-ums-under-bed-21k-ford-prep-package-autoslide-hijacker-8550038","title":"Demco UMS Under-Bed 21K Ford Prep Package Autoslide Hijacker 8550038","description":"\u003cp\u003eGet short-bed fifth wheel towing for your Ford prep package truck with the \u003cstrong\u003eDemco Hijacker UMS Under-Bed 21K Ford Prep Package Autoslide (Part #8550038)\u003c\/strong\u003e. Built specifically for trucks with the factory \u003cstrong\u003eOEM Ford puck system\u003c\/strong\u003e, this hitch combines an automatic 14\" slider with serious 21,000 lb capacity — plus the under-bed mounting that leaves your truck bed completely clear when the hitch is removed.\u003c\/p\u003e\n\n\u003ch3\u003eBuilt for OEM Ford Prep Package Trucks\u003c\/h3\u003e\n\u003cp\u003eThe 8550038 is engineered specifically for Ford trucks that came from the factory with the \u003cstrong\u003eOEM prep package (puck system)\u003c\/strong\u003e. That means no extra base rails or vehicle-specific frame brackets to install — the hitch drops directly into your factory pucks for a fast, clean install. If your Ford has the prep package, this is the right hitch for the simplest possible installation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Best of Both Worlds — Auto Slider + Clean Bed\u003c\/h3\u003e\n\u003cp\u003eThis hitch combines two features that usually require choosing between them:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUp to 14\" of automatic travel\u003c\/strong\u003e using rack-and-pinion gear technology — for clean, easy navigation in tight spots without manual slider operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUMS under-bed mounting\u003c\/strong\u003e — when the hitch is removed, your truck bed is \u003cstrong\u003ecompletely free and clear\u003c\/strong\u003e for hauling other loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCome rain or shine, the 21K Autoslide simply makes your life easier — which is what it's all about.\u003c\/p\u003e\n\n\u003ch3\u003e21,000 lb Capacity for Heavy Loads\u003c\/h3\u003e\n\u003cp\u003eThe 8550038 is rated for serious work with \u003cstrong\u003e21,000 lbs of gross towing weight capacity\u003c\/strong\u003e, putting it in the right range for big fifth wheels, toy haulers, and heavy RV setups. \u003cstrong\u003eMade in the USA\u003c\/strong\u003e with American steel and backed by a 5-year warranty.\u003c\/p\u003e\n\n\u003ch3\u003eLocked-In Connection — Wraparound Jaw with Locking Bar\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003ewraparound jaw with locking bar\u003c\/strong\u003e delivers a smoother, safer, and more secure connection to your king pin — cutting down on the rattle and trailer movement that wear on you over a long travel day.\u003c\/p\u003e\n\n\u003ch3\u003eLower Profile, Lighter Weight\u003c\/h3\u003e\n\u003cp\u003eThe 8550038 features a \u003cstrong\u003elower profile design and lighter weight\u003c\/strong\u003e than many comparable hitches, making installation and removal easier — important since the whole point of an under-bed system is being able to pull the hitch out when you need bed space. Easy access for routine maintenance is built in.\u003c\/p\u003e\n\n\u003ch3\u003eAdjustable Hitch Height for Level Towing\u003c\/h3\u003e\n\u003cp\u003eThree height settings let you fine-tune trailer height for level towing and proper bed rail clearance:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eLow: 15-1\/2\"\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMiddle: 16-3\/4\"\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eHigh: 18-1\/4\"\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eStandard Pin Boxes Activate the Slide Automatically\u003c\/h3\u003e\n\u003cp\u003eFor most setups, \u003cstrong\u003eno locking plate is required\u003c\/strong\u003e to activate the slide mechanism — standard pin boxes do the job out of the box.\u003c\/p\u003e\n\n\u003ch3\u003e⚠️ Cushioned Pin Box Requirement\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003ecapture plate is required\u003c\/strong\u003e for the slide mechanism to activate with the following cushioned pin boxes:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMOR\/ryde\u003c\/li\u003e\n  \u003cli\u003eTrailair Tri Glide\u003c\/li\u003e\n  \u003cli\u003e5th Airborne (Standard or Extended)\u003c\/li\u003e\n  \u003cli\u003eDemco Glide Ride\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConsidering Other Demco Hitches?\u003c\/h3\u003e\n\u003cp\u003eWe carry related Demco fifth wheel hitches for different truck setups:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/thervsurplus.com\/products\/demco-ums-under-bed-21k-autoslide-hijacker-8550037\"\u003eDemco UMS Under-Bed 21K Autoslide (8550037)\u003c\/a\u003e — same 21K under-bed Autoslide for trucks without the Ford prep package, with vehicle-specific frame brackets sold separately\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/thervsurplus.com\/products\/demco-ums-under-bed-18k-autoslide-hijacker\"\u003eDemco UMS Under-Bed 18K Autoslide (8550022)\u003c\/a\u003e — same under-bed Autoslide platform with 18K capacity, universal install with vehicle-specific brackets sold separately\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/thervsurplus.com\/products\/demco-21k-5th-wheel-hitch-without-rails-above-bed-mount-8550035\"\u003eDemco Hijacker 21K Autoslide (8550035)\u003c\/a\u003e — same 21K capacity with above-bed rail mounting (rails sold separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/thervsurplus.com\/products\/demco-21k-5th-wheel-hitch-with-rails-above-bed-mount-8550036\"\u003eDemco 21K Autoslide above-bed WITH rails (8550036)\u003c\/a\u003e — same 21K above-bed Autoslide with bed rails included\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/thervsurplus.com\/products\/demco-autoslide-5th-wheel-trailer-hitch-w-slider-single-jaw-above-bed-18-000-lbs-8550034\"\u003eDemco Autoslide 18K above-bed (8550034)\u003c\/a\u003e — same Autoslide platform with 18K capacity and above-bed rail mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/thervsurplus.com\/products\/21k-underbox-double-pivot-fifth-wheel-hitch-for-reese-ums-brackets-8550033\"\u003eDemco Hijacker SL 21K Underbox (8550033)\u003c\/a\u003e — same 21K capacity, fixed mount (no slider), for long-box trucks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included (and What's Not)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e Hitch (drops directly into factory Ford pucks)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSold separately:\u003c\/strong\u003e Capture plate (required only if you have one of the cushioned pin boxes listed above)\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFor OEM Ford prep package trucks\u003c\/strong\u003e — drops directly into factory pucks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e14\" automatic slider\u003c\/strong\u003e using rack-and-pinion gear technology\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUMS under-bed mounting\u003c\/strong\u003e — leaves truck bed clear when hitch is removed\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e21,000 lb capacity\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eWraparound jaw with locking bar\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3 vertical height adjustments\u003c\/strong\u003e (15-1\/2\", 16-3\/4\", 18-1\/4\")\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eLower profile, lighter weight\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eEasy access for routine maintenance\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo locking plate required\u003c\/strong\u003e for standard pin boxes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in USA\u003c\/strong\u003e with American steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFREE freight shipping\u003c\/strong\u003e to the 48 states (freight items are not returnable)\u003c\/li\u003e\n  \u003cli\u003eBacked by a 5-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: Demco\u003c\/li\u003e\n  \u003cli\u003eModel: Hijacker UMS Under-Bed 21K Ford Prep Package Autoslide\u003c\/li\u003e\n  \u003cli\u003ePart Number: 8550038\u003c\/li\u003e\n  \u003cli\u003eType: Slider Fifth Wheel Hitch (for short truck beds)\u003c\/li\u003e\n  \u003cli\u003eCapacity: 21,000 lb\u003c\/li\u003e\n  \u003cli\u003eSlider Travel: Up to 14\" (automatic, rack-and-pinion)\u003c\/li\u003e\n  \u003cli\u003eRail Type: OEM Ford (Puck system)\u003c\/li\u003e\n  \u003cli\u003eHitch Heights: 15-1\/2\" \/ 16-3\/4\" \/ 18-1\/4\"\u003c\/li\u003e\n  \u003cli\u003eMaterial: American steel\u003c\/li\u003e\n  \u003cli\u003eIncludes: Hitch only (no rails or brackets needed — uses factory Ford pucks)\u003c\/li\u003e\n  \u003cli\u003eSold Separately: Capture plate (only if needed for cushioned pin boxes)\u003c\/li\u003e\n  \u003cli\u003eCushioned Pin Box Requirement: Capture plate required for MOR\/ryde, Trailair Tri Glide, 5th Airborne (Standard\/Extended), Demco Glide Ride\u003c\/li\u003e\n  \u003cli\u003eCountry of Origin: USA\u003c\/li\u003e\n  \u003cli\u003eWarranty: 5-year\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Demco","offers":[{"title":"Default Title","offer_id":54661074714927,"sku":null,"price":2245.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7663\/0063\/files\/DMC8550038.jpg?v=1772738590","url":"https:\/\/thervsurplus.com\/products\/demco-ums-under-bed-21k-ford-prep-package-autoslide-hijacker-8550038","provider":"The RV Surplus","version":"1.0","type":"link"}