XL Mechanical extendable lowboys
The MDE puts an extending low deck behind a mechanical detachable neck. It offers another route to long-load hauling when your tractor and loading process suit a mechanical connection.
Know which build you’re comparing.
Manufacturer reference configuration, reviewed September 18, 2026. Confirm the exact build sheet, load distribution and operating configuration before selecting a trailer. Ratings shown do not establish a legal payload or route approval.
View manufacturer specificationsManufacturer brochure (PDF)| Reference model | XL 80 MDE |
|---|---|
| Overall Capacity | 80,000 lb |
| Concentrated capacity | 60,000 lb in 10' closed |
| Gooseneck Length | 10' |
| Main Deck length Range | 29' - 50' 4" |
| Extension Stops | Every 24" |
| Loaded Deck Height | 20" |
| Ground Clearance | 6" |
| Standard Axles | 2 |
Where this family fits
The published XL 80 MDE extends from 29 feet to 50 feet 4 inches on the main deck, with extension stops every 24 inches. Its table lists a 20-inch loaded deck height and 6 inches of ground clearance.
The reference concentrated rating is 60,000 pounds over 10 feet with the trailer closed. Specify the cargo’s bearing points and required working length so the applicable extended-load rating and supports can be reviewed.
Mechanical extendable lowboys
Explore current listings below. Confirm the unit’s location, configuration and timing with our sales team.
Let’s find the right configuration.
There are no matching listings in this family right now. Send us the load and timing you have in mind to discuss availability and order options.
A few things worth clarifying.
How does the MDE compare with the HDE?
Both extend the low main deck. The MDE uses a mechanical detachable neck; the HDE uses a hydraulic detachable neck. The available models, dimensions and ratings differ, so compare the actual build sheets for your load.
Is this an in-stock trailer or a configuration to discuss?
The specifications describe the manufacturer’s reference configuration. Matching live listings appear separately on this page. If none are listed, ask Western Truck & Trailer about current availability, specifications and order timing.
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