SmithCo SX4 4 axle side dumps.
The four-axle range is worth comparing when the route and tractor support a different weight distribution than a three-axle layout. Separate SmithCo’s 46-foot reference from Western listings with other frame lengths.
SX4 · 4 axle: current listings
These listings match this SmithCo family. Open a listing for its location and equipment; confirm pricing, condition and timing with sales.
- available units
- 1
- incoming units
- 9
- listings
- 6
NewSmithCo SX4-49-36 Side Dump
Call for availability
$113,900
NewSmithCo SX4-49-36 Side Dump
In stock
$113,900
NewSmithCo SX4-49-36 Side Dump
Call for availability
$113,900
See 3 more matching listings
Where this trailer fits.
Do not carry a reference dimension across models
SmithCo publishes a 46-foot frame and 36-foot tub for SX4-4636. Western listings may instead identify SX4-49-36. Use the specific listing and build sheet for the trailer being quoted.
Work through the axle arrangement
Axle spacing, lift equipment and tractor dimensions belong in the same review. Compare the combination’s empty weight and axle loading with the planned route before deciding what load it can carry.
Questions before you choose.
Why does the reference say 46 feet when a listing says 49?
They identify different builds. The table is SmithCo’s SX4-4636 reference; an SX4-49-36 listing must be checked against its own dimensions and build sheet. Neither figure should overwrite the other.
How do I check SX4 availability?
Matching live listings appear on this page, with available and incoming quantities shown separately. If none appear, send your required configuration and target date so sales can review sourcing options.
Bring us the application.
- The material and load
- Bring the material, density, target load and loading equipment. Tub volume and usable payload answer different questions.
- The tractor and route
- Include the tractor wheelbase, axle arrangement and routes. Review the complete combination and required weight distribution before choosing trailer axles.
- The working configuration
- Compare fixed, lift and steerable axles, tires, tarp and tractor hydraulics. Confirm dimensions and equipment on the actual build sheet.
Tell us what you need
Your inquiry goes to Western Truck & Trailer’s sales team.