Demco
21K UMS Series
21K lbs
Max Trailer Weight
4.2K lbs
Max Pin Weight
Our Assessment
Stupid Simple Score
DIY or Pro?
Installation
Availability
Where to Buy
Requires
OE Puck System
Expert Take
The 21K UMS is Demco's mid-tier puck-mount fixed fifth wheel, dropping into factory pucks for most three-quarter and one-ton trucks. Easy in and out, fair price, solid build, just not as plush over rough roads as the higher-end options.
About This Product
The Reese UMS 21K is the more reasonably-sized version of their Universal Mounting System hitch. Twenty-one thousand pounds of towing handles the majority of fifth wheels on the market with room to spare. Same UMS flexibility that works across different truck brands and configurations.
For Ford trucks with factory pucks, installation is standard puck-mount procedure. Drop the legs in, secure them, attach the head. The UMS design means this same hitch can also work with other mounting setups if you ever change trucks or need to move it.
Construction quality is typical Reese - they have been building hitches and towing equipment for decades. The head pivots smoothly, the jaws grip tight, and the whole assembly is built to last. Powder coat finish resists rust and weathering.
Twenty-one thousand pounds is enough for most people. Unless you are towing something genuinely massive, this capacity covers everything from mid-size fifth wheels up through large luxury models. Going higher than you need just adds weight and cost without real benefit.
Good option if you want the UMS mounting flexibility or prefer the Reese brand. For Ford Super Duty trucks with factory puck prep. Check bed length requirements - long beds are straightforward, short beds may need a slider depending on your specific trailer.
Compatibility
Fits These Trucks
Ford
| Model | Years | Bed Length | Bed Prep | |
|---|---|---|---|---|
| F-250 | 2011 - Present | Long Bed | Puck System | All options → |
| F-350 | 2011 - Present | Long Bed | Puck System | All options → |
Compare Options
Related Products
B&W
20K Companion
Weight Rating
20,000 lbs
Head Type
fixed
Mount
OE Fifth Wheel
MSRP
$1,199
B&W
25K Companion
The 25K Companion drops straight into factory bed pucks with no rails and locks down fast. Its cushioned head and full articulation make it the smoothest, quietest fixed fifth wheel you can bolt to a heavy-duty truck.
Weight Rating
25,000 lbs
Head Type
fixed
Mount
OE Fifth Wheel
MSRP
$1,399
PullRite
20K SuperGlide
The 20K SuperGlide is an automatic-sliding fifth wheel for short beds, sized for mid-weight fivers up to 20,000 lbs. It self-slides on turns for full cab clearance and tows quiet, with the usual auto-slide weight and a step up in install effort.
Weight Rating
20,000 lbs
Head Type
auto sliding
Mount
OE Fifth Wheel
MSRP
$2,130
PullRite
16K SuperGlide
The 16K SuperGlide is the smallest auto-slider in the line, made for short-bed trucks pulling lighter fivers up to 16,000 lbs. It slides itself back on turns for cab clearance and rides smooth; the sliding head adds weight and a bit of install fuss.
Weight Rating
16,000 lbs
Head Type
auto sliding
Mount
OE Fifth Wheel
MSRP
$1,786
Got Questions?
Frequently Asked Questions
The 21K UMS Series is compatible with Ford trucks from 2011 to 2026. Use the fitment table above for the complete list of compatible year, model, and bed configurations.
The 21K UMS Series is rated for 21,000 lbs gross trailer weight (GTW) and 4,200 lbs vertical trailer weight (VTW — the pin weight your truck carries). Always verify your truck's tow rating before purchasing.
This hitch is considered DIY-friendly — most owners can install it with basic tools.
The 21K UMS Series is available from Amazon, Demco directly. Use the "Where to Buy" buttons above for current pricing and availability.
The 21K UMS Series has a fixed head — it does not slide. This is the most common setup and works great for standard-length beds. If you have a short bed, verify clearance before purchasing.
The 20K Companion offers the same cushioned, fully-articulating head as the bigger 25K, just rated for lighter fivers. It drops into factory pucks and tows about as smooth and quiet as a fifth wheel gets.