10, 12 and 15 Ton ProSeries Dual Tandem

The 10 to 15 Ton ProSeries Dual Tandem equipment trailers feature our CNC pierced low profile designs. Easy loading and great load balance provide the best towing trailers available. Braking can be electric or air brakes, with flat bed or dovetail with ramps. HD Gooseneck hitch option is available for today's super strong diesel pickups. These trailers are great for hauling small dozers, backhoes, pavers, as well as lumber, pipe, and other construction material.

Winston Dual Tandem Equipment Trailers are available in 10, 12 and 15 Ton Models. These are the Ultimate Deckover Tagalong Trailers designed to haul all types or construction equipment. Low Profile Design with high quality components with many features.

Construction: These Heavy Duty Trailers are built to make most lowboys jealous. Winston Trailers uses Pierced Unitized construction with Cross Frame Reinforcement and Suspension Manufacturers recommended hanger bracing. This design produces a strong platform for transporting you equipment.

CNC Pierced Main Frame: One piece 12 Hi-Tensile I-Beams are CNC Plasma pierced for precise clean cuts with extreme consistency.

Cross Frame Reinforcement: Cross members are inserted through the pierced frames, with belly braces and side bracing provide the unitized frame. Add suspension manufactures recommended hanger bracing produces a frame with ridged stability.

Suspension Difference: Winston Trailers 10 Ton Suspension is different from other manufactures.

Full 3' Wide Rubber Bushing Heavy Duty Springs

  • Winston Trailers uses Suspension Upgrades others Don't.
  • Rubber Bushing Spring Eyes Never Have to be Greased.
  • Spread Axle Equalized Suspension Provides Larger Footprint for Better Load Balance.
  • 1/2' More Tire Clearance than other Suspensions at Full Load Conditions.
  • Adjustable Suspension Feature for True Tracking and Easy Alignment

In lieu of a 2' wide spring Winston uses a Heavy Duty 3' wide multi-leaf spring with rubber eye bushings. These spring outperform others buy adding more tire clearance when loaded. These springs and equalizers never have to be greased because of the HD rubber eye bushings. Long Equalizers provide a larger footprint for balance and towing. Also added are adjusters for easy adjustability of alignment and tracking.

5 position Adjustable Pintle Hitch

Breakaway Kit with Charger

Cold Bent Long Radius Tongue

8 Lug Hub Piloted Bud Type Wheels

Lockable Tool Box in Tongue

Double Hinged HD Ramps with Large Sand Pads

Step on Driver Side

Spring Assist Ramps

Oak Floor Staggered Where Joined

Stake pocket with Rubrail Tie Downs

Heavy Duty Adjustable Suspension

Sealed Modular Wiring Harness

48.5" Spread Axle Equalized Suspension

Lifetime LED Lighting

Dexter Axles Oil Bath Axles

PPG Epoxy Primer

Forward Self Adjusting Electric Brakes

PPG Modified Alkyd Enamel

Deck Length

Spare Tire Carrier

2S/1m ABS Air Brakes


Spare Tire and Wheel Combo

Parking Brakes

12,000 lb 2 Speed Bolt on Jack

Gooseneck with 2 5/16" Adj. Coupler

Extra Step

25,000 lb 2 Speed Bolt on Jack

King Pin Insert for Gooseneck

Flat Deck (No Dovetail or Ramps)

Dual Bolt on 2 Speed Jacks

Self Cleaning Dovetail

Mud Flaps

Tool Box on Side

Steel Dovetail with Traction Cleats

3'x 7 ½' Wood Filled Hyd. Ramps

Winch Track or Winches

Hutch Suspension

Paver Knife Edge Approach

Tire Options Available

Elect/Hydraulic Brakes

Other upon Request

Model 10 Ton - AP21025EL 12 Ton - AP21225EL 15 Ton - AP21225EL





Trailer Weight




Deck Length

25' (20' Flat + 5' Dovetail)

25' (20' Flat + 5' Dovetail)

25' (20' Flat + 5' Dovetail)

Deck Width




Deck Height Approx.

35"/ 33" Loaded

35"/ 33" Loaded

35"/ 33" Loaded

Main Beam

12" at 16# I Beam G50+

12" at 19# I Beam G50+

12" at 22# I Beam G50+


12,000 lb Bolt on Dropleg

12,000 lb Bolt on Dropleg

25,000 Lb 2 Speed Bolt on


ST235/80R16 E

ST235/80R16 E

215/75R17.5 H

Suspension Springs

HD 3" W, 5 Leaf, HD 5,000 lb ea.

HD 3" W 6 Leaf, HD 6,000 lb ea.

3" W 7 Leaf, HD 7,500 lb ea.


3" Stakepockects w Rubrail

3" Stakepockects w Rubrail

4" Stakepockects w Rubrail

Spring Assist Ramps

20.5 x 60" Ladder Style Flat

20.5 x 60" Ladder Style Flat

HD 20.5 x 60" Ladder Style


Bolt on Single HD 2 speed 25,000 lb Jack

Winch track with sliding 4 winches or weld on winches

6 Dovetail + 6 Spring Assist Flat Ramps make all loading easer. Better load angles for problems loading front and rear attachments to prevent dragging.

6 Dovetail + 6 Spring Assist Wood Filled Flat Ramps with Approach Plate

3x7 HD Wood Filled hidden Hydraulic Paver Ramps

24 x 24 Bucket plate with D ring for Tiedown

Positive Camber add to Frame to prevent Sagging or Bellied out Deck. Set up like a boy dog.

Bolt on Dual 2 Speed 12,000 lb. Dropleg Jacks

Winch sizes available from 8000 to 15,000 lbs

If you need more braking power, Elect/Hyd Brakes may be your option. Use a Dexter recommended brake controller.

Flatbed shown with optional Rubrails with Stakepockets on Rear, mud Flaps, Winch Track and Weld on Winch between the axles.

Our HD Gooseneck Trailers have a variety of options to fit your needs.

Move ramps closer for narrow equipment loading

Ladder style Self Cleaning Dovetail Inserts

12 x 12 x 48 Side Tool Box

Addition Siderail Steps can be added to your Siderails

HD Low Profile Tire Rated 14 Ply Rated 3640 Dual and 4080 Single at 110 PSI

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