• Demco Fifth Wheel Trailer Hitch – UMS Series, Under Bed Mount, With Head/ Head Support/ Handle Kit
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Demco

Demco Fifth Wheel Trailer Hitch – UMS Series, Under Bed Mount, With Head/ Head Support/ Handle Kit | 8550022

Demco Fifth Wheel Trailer Hitch – UMS Series, Under Bed Mount, With Head/ Head Support/ Handle Kit | 8550022

$2,098.90 USD
MSRP $2,375.39 USD Our price $2,098.90 USD
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Why buy from RV Towing Pros

  • Genuine new partsBrand-new Demco, never used or refurbished
  • Fit GuaranteeSend us your vehicle and we’ll confirm fit before you order. How it works
  • Ships in 5–8 business daysIn-stock parts; express available at checkout
  • Secure checkout & 30-day returnsPay with card, Shop Pay, PayPal and more

Questions? Message us — we answer within 1 business day.

Shipping & Returns

In-stock parts: standard shipping 5-8 business days, express available at checkout. Out-of-stock and special-order parts: 3-5 weeks. Returns accepted within 30 days of delivery (20% restocking fee; buyer pays return shipping unless we made an error).

Fit Guarantee: if you sent us your vehicle details before ordering and we confirmed fit, but the part doesn't fit, we cover return shipping and waive the restocking fee.

Questions? Message us — we answer within 1 business day.

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Product Description

The Demco 8550022 is an 18K Autoslide fifth wheel hitch for Demco's UMS (under-bed mounting system). The Autoslide head slides back automatically as you make a tight turn, up to 14" of travel, so a short-bed truck can turn sharply without the trailer's nose hitting the cab, and there's no getting out to pull a pin and slide the hitch by hand. With the UMS system, the hitch lifts out and leaves the truck bed clear when you're not towing.

It's rated for 18,000 lb gross trailer weight and 4,500 lb pin weight. The wrap-around jaw with locking bar holds the kingpin securely, three height positions help level the truck and trailer, and the slide works on standard pin boxes without a locking plate.

Compatibility

  • Trucks with a Demco UMS under-bed mount; requires the vehicle-specific Demco fifth wheel mount kit, sold separately
  • Standard kingpin boxes (no locking plate needed)
  • Glide Ride, MOR/ryde, Rota-Flex, Trailair Tri-Glide, Trailair Flex-Air and 5th Airborne pin boxes require a locking plate, sold separately

Never exceed the lowest rating among your truck, hitch, mount and trailer. Contact us with your truck year, make, model and bed length so we can confirm the right mount kit.

Specifications

  • Manufacturer: Demco
  • Part number: 8550022
  • Series: UMS (under-bed) Autoslide 18K
  • Gross trailer weight: 18,000 lb
  • Pin weight: 4,500 lb
  • Slide: Automatic, up to 14" travel
  • Height: 15-1/2" to 18-1/4" (3 positions)
  • Head: Single pivot
  • Finish: Black powder coat
  • Mounting hardware: Not included (mount kit required)
  • Warranty: Demco lists a limited 5-year warranty

What's Included

  • Hitch with head, head support and handle kit

Helpful Links

Shipping & Availability

In stock and ready to ship. Ships UPS Ground; heavy-item shipping applies.

Pro tipChoosing a fifth wheel hitch

  • Know your truck’s prep. Ford, Ram and GM factory puck systems use different mounts than universal rails.
  • Rate it for the trailer’s GVWR, not its empty weight, and make sure pin weight fits your truck’s payload.
  • Short-bed truck? You may need a slider hitch or offset pin box for turning clearance.

Not sure what fits? Send us your vehicle — we’ll confirm before you order.

Our Fit Guarantee Tell us your vehicle before you order and we’ll confirm the part fits. If we confirmed it and it doesn’t fit, we’ll cover return shipping and waive the restocking fee. Check my fit

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