Side dump trailers

Rapid side-discharge trailers for aggregate, construction materials, and job sites where end-dumping isn't an option.

Comparing dump styles? Read the Belly vs. end vs. side dump guide.

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SmithCo SX6U-53-40 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX6U-53-40 Side Dump

2027

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SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

2027

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SmithCo SX3-47-36 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX3-47-36 Side Dump

Montana·2027

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SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

2027

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SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

2027

Call for availability

Call for price

SmithCo SX3-4234 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX3-4234 Side Dump

Salt Lake City·2027

In stock

Call for price

SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

Salt Lake City, Las Vegas·2026

In stock

$127,900

SmithCo SXL2-4034 Side Dump
New
Side DumpsSmithCo logo

SmithCo SXL2-4034 Side Dump

Las Vegas·2026

In stock

Call for price

SmithCo SXFP2-3024 Side Dump
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Side DumpsSmithCo logo

SmithCo SXFP2-3024 Side Dump

Las Vegas·2026

In stock

Call for price

Side Dump Industries TRI-AXLE AIR RIDE Side Dump
New
Side DumpsSide Dump Industries

Side Dump Industries TRI-AXLE AIR RIDE Side Dump

Montana, Salt Lake City, Las Vegas·2027

3 in stock

$78,900

SmithCo SX6-53-40 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX6-53-40 Side Dump

Call for availability

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SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

Call for availability

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SmithCo SX6U-53-40 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX6U-53-40 Side Dump

Salt Lake City·2026

In stock

Call for price

Side Dump Industries 5 AXLE AIR RIDE Side Dump
New
Side DumpsSide Dump Industries

Side Dump Industries 5 AXLE AIR RIDE Side Dump

Montana·2027

2 in stock

$116,900

SmithCo SX6-53-40 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX6-53-40 Side Dump

2027

Call for availability

$142,900

SmithCo SX3-42-34 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX3-42-34 Side Dump

Call for availability

$87,900

SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

Call for availability

$127,900

SmithCo SX4-49-36 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX4-49-36 Side Dump

Call for availability

$113,900

SmithCo SX3-42-34 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX3-42-34 Side Dump

Salt Lake City·2027

2 in stock

$87,900

SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

Salt Lake City·2026

Call for availability

$127,900

SmithCo SX5-53-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-53-38 Side Dump

Montana·2026

In stock

$129,900

Side Dump Industries Super Tri Axle Air Ride Side Dump
New
Side DumpsSide Dump Industries

Side Dump Industries Super Tri Axle Air Ride Side Dump

Montana·2027

In stock

$80,900

SmithCo SX4-49-36 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX4-49-36 Side Dump

Salt Lake City·2027

In stock

$113,900

SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

Salt Lake City·2027

In stock

$127,900

SmithCo SX4-49-36 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX4-49-36 Side Dump

2025

Call for availability

$113,900

SmithCo SXL3-42-34 Side Dump
New
Side DumpsSmithCo logo

SmithCo SXL3-42-34 Side Dump

Salt Lake City·2025

In stock

$93,900

SmithCo SX4-49-36 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX4-49-36 Side Dump

2025

Call for availability

$113,900

SmithCo SX4-49-36 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX4-49-36 Side Dump

2025

Call for availability

$113,900

SmithCo SX4-49-36 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX4-49-36 Side Dump

Salt Lake City·2025

Call for availability

$113,900

SmithCo SX5-49-38 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX5-49-38 Side Dump

Salt Lake City·2025

Call for availability

$127,900

SmithCo SX6-53-40 Side Dump
New
Side DumpsSmithCo logo

SmithCo SX6-53-40 Side Dump

Salt Lake City·2025

Call for availability

$142,900

SmithCo SX3-42-34  Side Dump
New
Side DumpsSmithCo logo

SmithCo SX3-42-34 Side Dump

Salt Lake City·2026

In stock

$87,900

By Manufacturer

Shop side dumps by brand

Explore model lines and factory options from the brands represented in our listings. For a specific trailer's equipment, price and availability, use its inventory page.

On the job

Move the material. Match the job.

A side dump tilts its tub sideways to discharge a load. For aggregate, earthwork and site preparation, that gives you a way to stockpile or lay material alongside the trailer.

The right setup starts with what you haul, where you run and how you unload. Use those three details to narrow the trailers above.

A side dump trailer with its tub tilted and a load of soil at an earthwork site
Side discharge, in the field.Check the material, unloading space and trailer configuration together.
Before you choose

Spec the whole combination.

A trailer has to fit your work and the truck pulling it. Start with these four checks.

Front of a SmithCo side dump showing the hydraulic cylinder, hoses and truck connections
Hydraulics and controls are part of the buying decision.
Understand cubic yards vs. tons
  1. Material & tub

    Sand, aggregate, large rock and wet soil put different demands on a tub. Share the material, typical load and loading method so we can discuss the right construction and capacity.

  2. Payload & axle layout

    Compare empty weight, tub volume and axle spacing with your truck and routes. More cubic yards or more axles alone do not tell you what the combination can carry.

  3. Truck & hydraulics

    Confirm wet-kit flow, pressure, plumbing and controls against the exact trailer. Include tarp and lift-axle controls in the compatibility check.

  4. Unloading & access

    Allow space beside the trailer for the discharge and room to maneuver. Review ground conditions, overhead clearance and the manufacturer's operating instructions for the site.

Choose the discharge

Side, belly or end dump?

Start with where the material needs to land. Then compare the trailer's capacity, construction and site requirements.

Alongside the trailer

Side dump

Consider it for bulk hauling with side stockpiling or windrowing. Plan for lateral discharge space.

Back to side dump inventory

Under the trailer

Belly dump

Consider it for road base and aggregate windrows. Check material size and clearance at the bottom gates.

Explore belly dumps

Behind the trailer

End dump

Consider it when the job calls for a rear discharge. Review raised-body clearance and unloading conditions.

Explore end dumps
Keep the work moving

For this job. And the next one.

Pink SmithCo side dump coupled to a tractor on a road with mountains behind

Need a trailer for a project?

Ask about side-dump rentals for seasonal work or an extra truck. Send your dates, job location and tractor setup so the rental team can check the right equipment.

Representative equipment shown. Confirm rental availability and configuration.

Western Truck technician working on a SmithCo side dump tarp system

Already running a side dump?

Get help with tarp systems, hydraulics, brakes and running gear. Have the trailer VIN and a photo of the part or problem ready when you contact our parts or service team.

Parts and service teams in Salt Lake City and North Las Vegas.

Before you call

Side dump questions, answered.

A few details that help you compare units and prepare for pickup.

Side dumps haul bulk material such as sand, gravel, rock and excavated soil, then unload by tilting the tub sideways. They can stockpile or windrow material when the trailer and site are suited to the job. Match the tub construction to the material you haul most often.

It needs to be checked against the specific trailer. Pump flow, pressure, plumbing and control-valve configuration all matter. A setup used for an end dump is not automatically compatible with a side dump. Bring the wet-kit specifications and the trailer model to our team before arranging pickup.

Cubic yards describe the tub's volume, not its allowable payload. The usable load depends on material density, truck and trailer weight, equipment ratings, axle layout and the rules for your route. Compare the individual build sheet and your complete truck-and-trailer combination before choosing a size.

Review the tub and frame for wear, cracks or repairs, then check pivot points, cylinders, hoses, suspension, brakes, tires and tarp operation. Ask for maintenance records and a demonstration by a qualified operator. Confirm the VIN, axle specifications and hydraulic requirements against the listing.

Yes. Western Truck & Trailer offers commercial side-dump rentals. Share your dates, material, job location and truck setup so the rental team can confirm a suitable unit, availability and terms. Rental equipment is listed separately from the sales inventory above.

No. Listings can include in-stock equipment and units marked call for availability. Check the status and location on the unit's page, then confirm the specific trailer and pickup arrangements with the branch before traveling.

Talk through your setup

Tell us what you're hauling.

Bring the material, target load, truck setup and states you run in. We'll help you compare available trailers and identify the details to confirm before you buy.

Find your nearest branch