Used Fontaine Lowboy Trailers For Sale

Used Fontaine lowboy trailers are a common choice in heavy haul because they balance payload capacity, deck height, and serviceability well. Fontaine lowboys are often found in 40 ton, 55 ton, and 60 ton configurations, with models built around mechanical detachable or hydraulic detachable goosenecks. Buyers typically compare deck length, loaded deck height, axle count, and whether the trailer is already set up for a flip axle or flip neck extension. On the used market, that compatibility matters because it affects how easily the trailer can be matched to your existing hauling setup and permit requirements.

A lot of buying decisions in this category come down to the deck. Many Fontaine lowboy trailers run a 26 foot to 29 foot main deck, 102 inch overall width, and a loaded deck height that can range from the mid-teens up to around 22 inches depending on model and suspension setup. Lower deck height helps with taller equipment and can reduce routing headaches on bridge and overpass sensitive loads. Common features include wood flooring over the side rails, removable swing-out outriggers, multiple D-ring tie-down points, toolbox trays between the main beams, and air ride suspension with dump valves and mechanical ride height control. On three-axle units, a rear air lift axle is also common, especially on trailers intended for heavier or more flexible load distribution.

Fontaine Magnitude and similar heavy-duty platform designs are frequently used for moving excavators, dozers, pavers, crushing equipment, large farm machinery, and other high-weight, high-center-of-gravity loads that need a lower center section. Hydraulic detachable neck models can speed up loading and unloading for fleets handling self-propelled equipment every day, while mechanical detachable lowboys can be a simpler and lower-cost option for buyers who do not need the same loading frequency. Suspension brand, axle spacing, kingpin setting, and fifth wheel ride height should all be checked against your tractor specs, especially if you run specialized heavy haul tractors where neck geometry and loaded swing clearance are critical.

On a used Fontaine lowboy, condition matters as much as rating. Inspect the neck connection points, main beam flange areas, crossmember integrity, deck wear, suspension components, brake percentages, tire matching, and any signs of concentrated stress around the outriggers, rear bridge, and flip axle connection area. It is also worth confirming whether accessories such as a flip axle, approach ramps, load-bearing wheel covers, hammer plate, or scuff protection are included or if the trailer is only prepped for them. A well-spec'd Fontaine lowboy can be a strong fit for regional construction, equipment rental support, and specialized oversize hauling where legal deck height, durable structure, and detachable neck convenience drive profitability.