The 2026 XL Specialized 90MGX 16-Tire Expando Lowboy Trunnion Trailer is engineered to deliver strength, versatility, and compliance for industrial heavy haul applications. Designed with premium components and thoughtful features, this trailer excels in demanding environments — especially where legal axle spacing and payload flexibility matter most.
What Sets the XL Specialized 90MGX Apart
Expandable Wheel Area for Legal Axle Compliance
The MGX in the 90MGX model stands for Mechanical Gooseneck Expandable, indicating its innovative expandable wheel area. This trailer’s 16-tire cluster can increase from a standard 8-foot-6-inch width to a full 10-foot width via air-cylinder expansion. This capability helps operators meet varying axle law requirements without compromising load stability or requiring over-width permits on every trip — a significant advantage for fleets operating across states with different regulations.
Heavy Haul Capacity and Trunnion Suspension
With a rated 45-ton capacity (90,000 lb distributed and in the 16-ft concentrated zone), the 90MGX is built for serious loads. The trunnion axle design paired with walking beam suspension offers reliable performance and improved maneuverability on uneven surfaces — all in a compact lowboy footprint.
Practical Trailer Dimensions
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Total Length: 44 ft
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Width: 102 in (expandable to 120 in)
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Deck Height: ~23 in with 8″ ground clearance
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Well Length: ~23 ft clear deck for secure loading and transport
Built for Versatility and Ease of Use
Removable Mechanical Gooseneck
The mechanical detachable gooseneck allows operators to drive equipment onto the trailer from the front, simplifying loading for heavy equipment and machinery. This is especially advantageous for construction gear and large plant equipment that require front-load accessibility. Other loading options include a stubbed beaver tail and optional rear ramps.
Durable Construction and Premium Components
From walking beam suspension to robust trunnion axles, this XL Specialized trailer is constructed with enduring quality in mind:
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Polished aluminum wheels
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Pan-17 disc brakes with ABS support
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Apitong decking with raised center
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Multiple D-rings and chain hook points for securement
Lighting & Safety Features
The trailer includes a sealed 12V lighting system with Grote components, enhanced rear lights, and a 4″ amber strobe mount — all focused on safety and regulatory compliance during road movement.
Ideal Uses for the 90MGX Expando Lowboy
This model shines in a variety of heavy-haul applications including:
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Construction equipment transport
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Industrial machinery hauling
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Agricultural equipment movement
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Specialized and oversize load operations
The expandable wheel area and robust design make it particularly useful in regions with stringent axle laws, such as California and other Western U.S. states.
Why Choose an XL Specialized Trailer?
XL Specialized Trailers is a U.S.-based manufacturer known for customized heavy-haul solutions and engineering excellence. Their trailers are built with flexibility and longevity in mind, serving construction, agriculture, industrial, and transportation sectors with tailored designs and aftermarket support.
Whether you need a standard lowboy for everyday hauling or a high-capacity trailer that adapts to regulatory demands, the 90MGX is a testament to quality and industry-driven innovation.
Conclusion
The 2026 XL Specialized 90MGX 16-Tire Expando Lowboy Trunnion Trailer offers a powerful combination of expandable compliance, high payload capacity, and durable construction. Its trunnion suspension and expandable wheel area make it a go-to choice for haulers who need flexibility without sacrificing strength. For companies seeking a dependable and adaptable trailer that performs in various heavy-haul environments, the 90MGX stands out as a top contender.
See This Trailer In Stock at Midco Sales
Inventory > 2026 XL Specialized XL90MGX
