Centerline Tridem Clamshell Trailer

Whatever you’re hauling – whether it is sand, clay, asphalt, or gravel – the Centerline Clamshell trailer can help you with the job.


Centerline Tridem Clamshell Trailer

Hopper Opening

Material exits easily from the hopper by way of a 68” x 83” gate opening and the steep end slopes and tapered side slopes further promote material cleanout.

Centerline Clamshell Trailer Trailer

Push Block

Should the trailer ever need to come into contact with a push machine, a bolt on push block assembly protects the rear.

Centerline Tridem Clamshell Trailer

Open Frame

The open frame design in the front and rear reduces weight and drag and increases your payload and profit.

Centerline Tridem Clamshell Trailer

Rock Shields

If the job requires you to pull the trailer through harsh terrain, individual guards on the front side of the brake pots are there to protect components against debris.

Centerline Tridem Clamshell Trailer

Optimum Slope

The steep end slopes combined with tapered side slopes greatly improves material cleanout.

Centerline Tridem Clamshell Trailer

Side Controls

Side controls installed on the trailer allow ground crew to control the flow of material from the hopper by manually opening and closing the gates.

Smart Owner Program

When you purchase a new trailer from us, you become part of our Smart Owner Program. This means that during the first year of ownership, you receive regular emails from us reminding you of important routine maintenance measures, as well as deals exclusive to your purchase. While we’d love to keep selling trailers to you, we are firm believers that, when properly maintained, our trailers will keep earning you money for many years.


Model CS3800
Length 38'2"
Width 8'6"
Overall Height 10'9" to top of tarp
Target Load Area 17'0"
Bottom Hopper Opening 68" x 83"
Gate Ground Clearance 18"
Capacity 25.5 cu. yd. with 2” x 10” sideboards
Axle Spread 59"
Frame QT-100, I beam sub frame over tridem suspension
Lightweight engineered cross members
Diffuser plates & gussets located where required to support & relieve stress
Upper Coupler Rubber bushing, side oscillating upper 3/8” fifth wheel plates c/w 2” kingpin
Hopper 54” h formed 10 gauge carbon steel side wall panel, formed horizontal stiffener
Main frame beams: 4” x 4” square tube
10 gauge carbon steel 49% upper & 65% lower slope panel, formed horizontal stiffeners
2” x 10” sideboards
Gates (2) 36”w x 127”h 1/4” formed gate panels, formed longitudinal stiffener
Composite 8” double acting air cylinders & quick return valves
Cylinder guards mounted on front & rear hopper opening
Electronic spread selection & clean out
60 gallon air reservoirs c/w shut off valve & safety check valve
Mac electric over air operated solenoid gate control
Wilkerson lubricator & filter units located in a lockable side cabinet
Push Block Push bolt on rear
Landing Gear Lightweight drop tube dolly legs, pin type height adjustment
Rock Shields Heavy-duty; installed on front side of suspension
Suspension (3) 25,000 lb. air ride suspension
Dual electric/manual air dump & liquid filled weigh gauge
Axles (3) 25,000 lb. axles @ 77.5” track c/w parallel spindles
Brakes 16 ½” x 7” Q Plus brake shoes c/w enclosed camshafts
Automatic slack adjusters
Parallel axle bearing system & Stemco HP seals
Meritor/WABCO 2S/1M ABS
Hubs & Drums 10 stud steel piloted hubs & cast steel drums
Wheels 10 stud piloted mounted steel 24.5 x 8.25 wheels – Silver
Tires 11R-24.5 radial 16 ply
Electrical System Integrated harness system
LED rubber mounted sealed beam
Midway turn signal on each side of trailer
Fenders Aluminum checker fenders installed outside neck areas & rear tires
Mudflaps Standard equipped full mud flap package
Load Cover Michel’s Dura-Flip c/w manual chain drive winder
Finish Sandblasted, primed, & painted with DuPont Imron Elite urethane paint
Sideboards painted with DuPont acrylic urethane paint - Black
Single 4” & double 1” black body stripe
Safety Tape Applied as per regulations
Weight 7,360 kgs +/- 2% on steel wheels (subject to option changes)
Warranty 1st year – 100% parts & labour
2nd year – 50% parts & labour
3rd to 5th year – 50% parts only
  • Available in other axle configurations
  • Tuff-Lift axle lift system
  • Tridrive tractor compatible
  • Aluminum wheels, lightweight hubs, and Centri-Fuse drums
  • Michel’s Gravel Guard retractable PVC load cover
  • Roll-Rite load cover and electric driven load covers
  • Load slide control electric box vibrators
  • Quick-Slide UHMW hopper liners



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