Close up of side dump trailer

When it comes to superior stability, easier unloading, and faster cycle times – SmithCo side dump trailers are second-to-none. A trailer that dumps to the side means more safety and stability with any haul and offers a more versatile method of getting the job done.

E3 A3410

SX Series

SmithCo’s SX Series encompasses a number of different trailer models that have varying amounts of axles.



SmithCo’s Medium High Volume tub was designed for low density payloads that require larger tub volume.

Shv tub


SmithCo’s Super High Volume tub was designed for wet, low density payloads.

Construction pup cp30


SmithCo’s Construction Pup is designed for both off-road construction and agriculture.

Ag pup cp20


SmithCo’s Ag Pup was designed for the agricultural market and can be easily pulled with an ag tractor.

TMB 3 gallery


SmithCo’s Truck Mount Box is a shorter, easier to transport, fully functional side dump trailer that can be mounted to a tractor or truck chassis.

Double Tub

Double Tub Series

The SmithCo Double Tub Series is our SX Series frame mounted with two or three tubs instead of one.

A b trains

A-Trains & B-Trains

SmithCo has developed a large series of A- and B-Train side dump trailer configurations ranging from six to 15 axles combinations.

Smith Co Mine Trailer 3 6 23

Mine Trailers

SmithCo side dumps are designed for distance hauling to make remote, smaller pockets of ore more accessible.

Feedlot trailer

Feedlot Series

SmithCo’s Feedlot Trailers are designed to hold low density payloads that require more tub volume and can handle dual product hauling.