Demco
21K UMS Series
21K lbs
Max Trailer Weight
5.3K lbs
Max Pin Weight
Our Assessment
Stupid Simple Score
DIY or Pro?
Installation
Availability
Where to Buy
Requires
OE Puck System
Expert Take
This 21K UMS fixed fifth wheel mounts into the factory puck system for a fast, bolt-free setup. Good capacity and value for typical fifth-wheel hauling, but the dual-jaw head and lack of cushioning mean a slightly stiffer tow than premium picks.
About This Product
This fifth wheel hitch drops directly into factory OE pucks. No adapter needed. If your truck came with the fifth wheel prep package, you have pucks in your bed ready to accept this hitch.
Straightforward construction focused on reliability. Secure jaw grip, height adjustment, durable finish. Gets the job done without unnecessary complexity.
Twenty-one thousand pounds is enough for most people. Unless you are towing something genuinely massive, this capacity covers it with room to spare.
UMS flexibility is useful if you change trucks or move hitches between vehicles. Verify this configuration matches your setup.
Compatibility
Fits These Trucks
Chevrolet
| Model | Years | Bed Length | Bed Prep | |
|---|---|---|---|---|
| Silverado 2500 | 2020 - Present | Long Bed | Puck System | All options → |
| Silverado 3500 | 2020 - Present | Long Bed | Puck System | All options → |
GMC
| Model | Years | Bed Length | Bed Prep | |
|---|---|---|---|---|
| Sierra 2500 | 2020 - Present | Long Bed | Puck System | All options → |
| Sierra 3500 | 2020 - Present | Long Bed | Puck System | All options → |
Compare Options
Related Products
B&W
25K Companion
Weight Rating
25,000 lbs
Head Type
fixed
Mount
OE Fifth Wheel
MSRP
$1,399
B&W
20K Companion
A fixed 20K Companion for factory puck beds, delivering the cushioned head and full articulation that make these so easy to live with. No rails to bolt in and it lifts out by hand when you need the bed clear.
Weight Rating
20,000 lbs
Head Type
fixed
Mount
OE Fifth Wheel
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$1,200
B&W
20K Companion
A fixed 20K puck-mount Companion that installs without rails and pulls out with a lever afterward. The cushioned, fully-articulating head keeps the ride smooth and dead quiet down the road.
Weight Rating
20,000 lbs
Head Type
fixed
Mount
OE Fifth Wheel
MSRP
$1,199
B&W
25K Companion
Another 25K puck-mount Companion with the trademark cushioned head that soaks up road shock and stops the back-and-forth chucking. It installs without rails and comes out in pieces light enough to handle solo.
Weight Rating
25,000 lbs
Head Type
fixed
Mount
OE Fifth Wheel
MSRP
$1,399
Got Questions?
Frequently Asked Questions
The 21K UMS Series is compatible with Chevrolet, GMC trucks from 2020 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 5,250 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 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.
A 25K Companion built for factory puck systems, giving you the same cushioned, chucking-free tow as the rest of the line. Lever-out removal means your truck bed goes back to being a truck bed in seconds.