XL MGX expandable trunnions
The MGX expands the width of its rear wheel area rather than the length of its main deck. Its 16-tire trunnion arrangement makes it a different starting point from a conventional lowboy or an extendable deck.
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)| Representative model | XL 100 MGX |
|---|---|
| Overall capacity | 100,000 lb |
| Concentrated capacity | 100,000 lb in 16' |
| Overall length | 44' |
| Main deck | 23' load-bearing |
| Width, retracted | 8'6" |
| Width, expanded | 10' |
| Wheel area | 16-tire, air-cylinder expansion |
| Frame | Perimeter frame |
| Suspension | Walking beam, trunnion axles |
Where this family fits
XL describes the 100 MGX with a 44-foot overall length and a 23-foot load-bearing main deck. Air cylinders move the wheel area from 8 feet 6 inches to 10 feet wide. The published concentrated rating is 100,000 pounds over 16 feet.
Review the entire combination against your route and operating requirements. More tires or an expanded wheel area do not establish a permitted payload. XL’s policy gives trunnion suspension trailers, including MGX, two-year structural coverage rather than its general five-year structural term; conditions apply.
MGX expandable trunnions
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.
Is an MGX an extendable lowboy?
Its wheel area expands in width. It does not use the length-extending main-deck arrangement of an HDE or MDE. Choose the family around the load dimensions, truck and required axle arrangement.
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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Have a model in mind or still comparing? Tell us what you haul, the truck you run and when you need it. Our team can work through current availability and configuration options with you.
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