This monster of a trailer is outfitted with triple 12K axles, an 18″ low profile Engineered Beam frame, and GVWR up to 40,000 lb. #BeastMode
Build Your Own TrailerGVWR: 30,000 – 40,000 lb
LENGTHS: 48′ – 53′ (Incl. 10′ Deck)
WEIGHT RANGE: 11,750 – 13,420 lbs
BED WIDTH: 102″
FRAME: 18″ Low Profile Engineered Beam
NECK: 10′ Step Deck w/ Slide-In Ramps
AXLES: 3 – 12,000 lb Lippert Axles
TIRES: 14 Ply All-Steel Radials
(Upgrade to 215/75R17.5 – 16 Ply)
We design, engineer, and build our own I-Beams. Our U.S. Patent Protected Engineered Beam design allows for the tallest and strongest beams in the industry, with the best strength-to-weight ratios on the road.
Taller beam. Lighter Weight. Stronger Frame.
Ride Quality & Cargo Protection: Smoother & quieter ride that protects the cargo being hauled.
Standard Bolt-On Front Lift Axle: This unique included feature saves tire wear and fuel consumption on empty hauls.
More per mile: Air Ride allows you to net higher rates per mile hauling loads not allowed with standard suspension.
44″ wide ramps for MAX versatility. 50 ksi steel ramp frames x 4 frames per ramp for MAX strength. HD Spring loaded for easy lifting. For safe, stable loading. Read more HERE.
12′ long with easy to climb, 12.5 degree approach angle. Includes Blackwood rubber-infused runners for traction, automatic latch for easy operation, and wireless remote control. Read more HERE.
These 24″ x 60″ spring-assisted extreme duty knee ramps are perfect for loading concentrated machines such as backhoes and excavators where space between the ramps is a necessity for knuckle height clearance. Read more HERE.
The Straight Deck tail configuration includes 3″ channel 96″ Rear Slide-In Ramps that can be conveniently stowed away when not in use. Come with a single piece bumper with light protection.
Great question! Keep scrolling to customize and build your SDX312 step deck trailer to your liking with our interactive build-your-own trailer configurator, then you will be prompted to submit your trailer build to your nearest Diamond C dealer for quote and availability. We have an extensive dealer network of almost 200 dealers strategically placed throughout North America.
When only the very best will do, upgrade your SDX312 to our heavy duty 40,000 lb GVWR Package. Includes a beefy 40K coupler and frame reinforcements for maximum strength. #DoWork
A must have for anyone who hooks and unhooks their trailer often! Fast, convenient, and strong. Learn more HERE.
Diamond C has been an industry leader for over 40 years since our humble beginnings over 4 decades ago. We strive to be on the forefront of trailer manufacturing by continuously demonstrating excellent quality and value, cutting edge innovation, and superior customer service.
Over 40 years ago a young East Texas couple embarked on a journey that at the time was merely a means to put food on the table for their growing family. Unbeknownst to them, their nature would have an endless impact on the business they would create…
Our Purpose is to fuel the well-being, growth and success of our team members, customers and community abroad.
Our Niche is extraordinary trailers and service to match.
Our Core Values are Do Work and Love Strong.
Our custom Difference Maker DM COATING SYSTEM produces extraordinary trailer finishes that are exceptionally durable and beautiful. We offer multiple standard and custom COLORS to perfectly compliment your trailer.
Watch VideoYour one-stop-shop for everything trailer related. In-depth articles and resources about our trailers, options, culture, and what makes us stand apart from the other guys.
Choose from a variety of upgrades:
– AIR RIDE SUSPENSION
– HD 215/17.5 TIRE & WHEEL UPGRADE
– HYDRAULIC JACKS
– SLIDE TRACK & RATCHETS
– CUSTOM COLORS
– and more…
The choice is yours.
Configure your ideal trailer below.
Step 1
Configure your ideal trailer below by selecting your desired specifications.
Step 2
Submit your custom trailer build to your closest Diamond C dealers.
Step 3
Your selected dealer(s) will contact you with final pricing and availability.
*Trailers are shown with base MSRP pricing (Manufacturer’s Suggested Retail Price). MSRP is NOT final sales price - your final sales price varies depending on region and dealer. Be sure to submit your trailer to your local Diamond C dealer for final trailer pricing.
