Used Lowboy Trailers For Sale

Used lowboy trailers are built for hauling tall, heavy equipment that would be difficult or impossible to move on a standard flatbed. Also called lowbed trailers or double-drop detachable trailers, they are common in construction, paving, utility, and machinery transport because the low main deck helps keep loaded height legal. Buyers usually start with capacity and neck style first. In this category, common ratings range from 35 ton to 55 ton and beyond, with mechanical detach and hydraulic detachable gooseneck designs both widely available. Hydraulic detach models are generally faster and easier to load, while mechanical detach designs can be simpler and less expensive to maintain.

Deck layout matters as much as the ton rating. Pay attention to loaded deck height, main deck length, top deck length, rear deck length, and whether the trailer is fixed or extendable. Many used lowboy trailers in this class run 102 inches wide with 22.5-inch rubber, air ride suspension, and tandem or tri-axle configurations. A 20-inch to 24-inch loaded deck height is common and can make a major difference when moving excavators, dozers, pavers, crushers, or other high-profile equipment. If your freight varies, an extendable lowboy can add flexibility for longer machines, while a fixed well may offer lower tare weight and fewer moving parts.

The condition details that matter most on a used lowboy are structural, hydraulic, and running gear related. Check kingpin settings, swing clearance, crossmember spacing, deck condition, and signs of neck or frame repairs. On hydraulic detach units, inspect the pony motor, hydraulic cylinders, hoses, valves, and neck locking system. Suspension brand and setup, axle spacing, lift axle function, brake type, and tire condition all affect service life and operating cost. Features like apitong flooring, chain slots on 24-inch centers, D-rings, swingout outriggers, boom wells, bucket pockets, toolboxes, rear strobes, and load-bearing fenders can add real day-to-day value depending on the equipment you move.

A good used lowboy should match your freight mix, permitted weight strategy, and route conditions. Tandem axle 35 ton trailers are common for compact and mid-size iron, while tri-axle 50 to 55 ton units are better suited for heavier concentrated loads and more demanding heavy-haul work. Buyers hauling in states with stricter bridge or axle requirements should compare axle group configuration, deck concentration rating, and overall loaded dimensions before narrowing down a trailer. The best choice is usually the one that balances legal height, usable deck space, attachment clearance, and maintenance simplicity for the type of equipment you haul every week.