Triple Axle Drop Deck Trailers

Our triple axle trailers come with the same sturdy steel designs to handle heavy loads with maximum maneuverability. Choose a drop deck trailer with beaver tail and ramp or a Non Beaver Tail trailers that go up to 53 feet. Each triple axle trailer is equipped with standard air ride suspension and color-coded air lines.

Model Number

Trailer DescriptionTare Weight (lbs)Closed Axle10:1 Spread AxleTriple Axle
DD48-348' Triple Axle12,840N/AN/Ayes
DD53-353' Triple Axle13,720N/AN/Ayes
DD48-5-348' Triple Axle + 5' Beaver Tail with Twin Ramps15,130N/AN/Ayes
Main Beams
Designed with Camber - built in Spencer facility
Web1/4" high grade 100,000 yield steel
Flange3/8" x 5" high grade 100,000 yield steel
Cross Members
4" x 3.2# 80,000 yield Jr. I-beam on 16" centers
Side Rails
6" x 8.2# structural C channel
Brake Size
16.5" x 7"
Upper Deck Length
Lower Deck Height
Transition Drop from Upper to Lower Deck
Overall Width


  • Tri-Axle has standard Air Ride Suspension
  • 22.5K Arvin Meritor triple axles with Wabco ABS brakes (single axle) and 10 bolt hub piloted steel rims 77,500 lbs. GVW
  • Kingpin setting of 24”
  • Holland Atlas 55 series with 2 speed landing gear
  • Rubber mounted LED lights
  • Sealed wiring system w/ 7-way receptacle – designed by Truck-Lite™ for Demco
  • Midship turn signals on all trailers
  • Color coded air lines
  • Steel hand sanded/Phosphate washed for superior paint adhesion
  • All exterior mating surfaces are caulked prior to paint
  • Diamond Vogel polyurethane primer and paint (black)
  • Stake pockets and pipe spooling at 9” intervals
  • Rub rail of 2” x 3/8” flat steel
  • 1-1/8” x 7” Apitong flooring
  • Winch track (driver side)
  • Anti-sail mud flaps
  • D.O.T. approved conspicuity tape
  • Manifest holder


  • Air Ride 3 Axle Manual Dump Valve
  • Air Ride 3 Axle Electric Dump Valve
  • Air Ride Scale
  • Kingpin setting of 18"
  • ABS Installed on 2nd Axle
  • Polished Aluminum Rims
  • 255/70R 22.5 LRH Import Radial Tires
  • 255/70R 22.5 LRH Domestic Radial Dunlap SP160 Tires
  • Sliding Winches
  • Aluminum Toolbox
  • Front Bulkhead (Removable)
  • Custom Paint Color (Red, Grey, White, Blue)

Find a Dealer