Everything you need to know about the
8.5x20 Double Axle – Diamond Cargo
- 8.5x20 Double
- Maintenance & More
8.5x20 Double Axle – Diamond Cargo
1. Technical Features Table
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| Standard Features | Diamond |
| PRICE | $7,480.00 |
| EXTERIOR METAL | .080 Polycore Exterior (Semi-screwed) |
| AXLES | 3500lb USA Made Lippert Drop Leaf Spring Axles |
| V-NOSE | V Nose (Standard) |
| ELECTRIC BRAKES | Axles w/ Electric Brakes |
| DOME LIGHT | (2x) 12V LED Dome Light with switch |
| WALLS/CEILING TUBING | 1.5" x 1" steel tube in walls and ceiling |
| FLOOR TUBING | 6" steel tube main frame |
| FLOOR CROSS-MEMBERS | Floor Members 16" O.C. |
| ROOF CROSS-MEMBERS | Roof Members 16" O.C. |
| WALL CROSS-MEMBERS | Wall Members 16" O.C. |
| LIGHTS | All LED exterior lighting incl. Rear Loading Light |
| INTERIOR HEIGHT | 7' (84") Interior Height |
| REAR DOOR | Heavy Duty Ramp Door w/ Spring Assist & 16" Extension Flap / Door Hold Back / (2) Rear Door Handles |
| PLUG / COUPLER (BALL) | 7-way Round Bargman Plug / 2 5 / 16" Coupler |
| FENDERS | Aluminum fenders w/lights |
| SIDE DOOR | 36" RV-Style Side Door w/ Flush Lock |
| ATP | ATP In Stepwell / ATP Front & Rear Corners |
| TIRES | ST205 15" Radial Tires |
| RIMS/WHEELS | Silver Painted Wheels |
| ROOF MATERIAL | Galvalume roof |
| STONEGUARD | 24" Stoneguard on front |
| TONGUE JACK | 5000 lb A-Frame tongue jack w/ Sand Foot |
| HUBS | EZ Lube Hubs |
| THERMA-PLY | Therma-Ply Ceiling |
| WALL MATERIAL | Premium 3/8" plywood sidewalls |
| FLOOR MATERIAL | 3/4" plywood floor/undercoated |
| SIDEWALL VENTS | Plastic Sidewall Vents |
| DRINGS | (4) 5000lb D-Rings Welded to Frame |
| BEAVERTAIL | No Show Beavertail |
| EMPTY WEIGHT | 3200 lbs |
| LOAD CAPACITY | 3800 lbs |
| GVWR | 7000 lbs |
| TONGUE WEIGHT | 480 lbs |
2. Technical FAQ

Overall Length: 23’6″ / 282 in (Breakdown: 20′ on the Box + 3’6″ on the Tongue) 20″ on the Vnose
Overall Width: 8’6″/ 102 in (Breakdown: 8’6″ on the Box)
Overall Height ( Diamond ): 8’4″ / 100 in (Breakdown: 7′ on the Box + 16″from the ground to the box)
Overall Height (Anvil): 7’10” / 94 in (Breakdown: 6’6″ on the Box + 16″from the ground to the box)
Overall Length: 19’9″ Box (Breakdown: Subtract 3″ which counts for rear door & framing) plus 20″ on the Vnose
Overall Width: 8′ Wall to Wall (Breakdown: Subtract 3″ (each wall) which counts for framing & Plywood)
Width Between Wheel Boxes: 81 inches (Breakdown: Subtract 7.5″ (each side) which counts for wheel boxes
Overall Height ( Diamond ): 7′
Overall Height (Anvil): 6’6″
Width: 90″ (Breakdown: Subtract 12″ (6 on each side) which counts for plywood & framing)
Height ( Diamond ): 78″ (Breakdown: Subtract 6″ which counts for plywood & framing)
Height (Anvil): 72″ (Breakdown: Subtract 6″ which counts for plywood & framing)
7-way Round plug
5x4.5 (5 Lug)
6 Ply
Screws are 4′ apart instead of being every 2′
It’s an asphalt undercoating paint
We developed a section exclusively for Custom Options where we show sample photos and explain most popular options:
Click Here for More Information.
Here are examples of some of the most popular Custom Options:
– Blackout Package
– Electrical Package
– Insulation Package
– Rubber Flooring
– Etracks
– D-rings
– Windows
– Extended Tongue
– Extra Height
– Ladder Racks
– Finished Interior (Metal/Vinyl)
– Air Conditioner
– Lighting Options
– Axle Upgrades
– Concession Window
– Special Door Options
– Cabinets
– Barn Doors
3. Sample Photos
4. Sample Video
5. Sample Colors (Click to enlarge)
6. Purchase FAQ
Click the link below for Financing Options:
https://makemytrailer.com/enclosed-trailer-financing-services/
Click the link below for Delivery Options:
https://makemytrailer.com/delivery/
30 Day Temporary Tag, Certificate of Origin and obviously your Title so you can register your brand new trailer
Yes they are and also the reason why your trailer pick up is directly at the Factory.
We do not charge any taxes, that’s something that you pay when you register the trailer
Yes, as soon as your trailer is ready we can provide your with your VIN number.
1) Credit or Debit Card (over the phone or invoice sent to your email)
2) Mail a Cashier’s Check
3) Wire Transfer
Once your deposit is confirmed we’ll send you an email just make everything official and after 24 hours (timeframe we provide in case of any changes) we will send your order to our production team so they can start working on your future top notch trailer
It depends on 2 factors: The season and your Order so make sure to ask our awesome sales team for a more accurate completion timeframe but on average you might be looking between 2 to 4 weeks on standard order and about 3 to 5 weeks for orders with custom options.
Note: We do make exceptions so make sure to ask our sales team
We don’t usually provide any updates during the building process but we can definitely ask our production team how things are going but as soon as your trailer is ready, we will send you the completion email along with the instructions so you can start your pick up arrangements
By clicking Buy Now, you will be redirected to our secure PayPal checkout page. A deposit is required to reserve the standard version of this trailer size. The remaining balance, including any selected options or upgrades (such as A/C or insulation), will be due at pickup or delivery. Final price may vary depending on manufacturer and features. Please contact us to confirm details before completing your order.
7. Need a Quote?
Have you recently invested in an enclosed cargo trailer, or are you looking to maximize the lifespan and efficiency of your current one? Our comprehensive PDF guide is your ultimate companion to mastering the art of trailer maintenance!
- Step-by-step instructions on pre-use checks to ensure safety and readiness for the road.
- Expert advice on periodic maintenance routines to keep your trailer in peak condition.
- DIY tips for interior and exterior care, from flooring maintenance to rust prevention.
- Winterizing strategies that protect your investment through the coldest months.
- Essential insights into tire care, brake maintenance, and the importance of proper ventilation.
- Bonus content: Safety equipment checklist, emergency preparedness, and much more!
Safeguard Your Investment:
10 Smart Ways to Prevent Trailer Theft!
8.5x20 Double Axle Diamond Cargo Trailers For Sale: Unbeatable Value & Selection
Introduction: Discovering the Premier 8.5x20 Double Axle Diamond Cargo Trailer
When searching for a dependable and versatile hauling solution, the sheer number of options can be overwhelming. However, one specific configuration consistently emerges as a top contender for both commercial operators and private users: the 8.5x20 double axle enclosed cargo trailer. This size represents a perfect balance of substantial capacity and manageable maneuverability. Among the leading manufacturers, Diamond Cargo has carved out a reputation for delivering exceptional quality and value, making their 8.5x20 trailers a benchmark in the industry. This comprehensive guide will explore why this specific model is a premier choice and how Diamond Cargo provides an unbeatable combination of value, selection, and durability.

The Growing Demand for High-Quality Enclosed Trailers
In today’s dynamic economy, the need for reliable transport solutions has never been greater. Businesses require enclosed trailers to protect valuable equipment and inventory from weather and theft, while individuals seek secure ways to haul recreational vehicles, household goods, and project materials. This surging demand has elevated the standards for what buyers expect. A simple box on wheels is no longer sufficient; customers now demand durable construction, thoughtful design, and the flexibility to adapt a trailer to their specific needs.
Why the 8.5x20 Double Axle is the Gold Standard for Versatility and Capacity
The 8.5x20 footprint is the sweet spot for serious hauling. The 8.5-foot width provides ample interior space for wide items like classic cars, UTVs, or large commercial equipment, while the 20-foot length offers significant volume without becoming excessively difficult to tow or park. The addition of a double axle (or tandem axle) is a critical feature. It dramatically increases the Gross Vehicle Weight Rating (GVWR), improves stability on the highway, enhances braking performance, and provides crucial redundancy in case of a tire failure, ensuring a safer towing experience for heavy loads.
Introducing Diamond Cargo: Synonymous with Unbeatable Value and Extensive Selection
Diamond Cargo has established itself as a leader in the enclosed trailer market by focusing on a core mission: building high-quality, durable trailers at a competitive price point. Their factory-direct model allows them to maintain strict quality control and pass savings on to the customer. This approach means buyers aren’t just getting a trailer; they are investing in a product backed by a manufacturer committed to longevity and performance. The brand offers a wide variety of trailers, but the 8.5x20 model perfectly encapsulates their promise of robust engineering and exceptional value.
Unbeatable Value: The Diamond Cargo Promise of Quality and Durability
True value in a cargo trailer isn’t found in the lowest initial price but in the long-term reliability and cost of ownership. Diamond Cargo builds its reputation on this principle, engineering trailers that withstand demanding use for years. This commitment translates into a smarter investment that protects your assets and minimizes downtime.
The Diamond Cargo Manufacturing Excellence: Built to Last
The foundation of any great trailer is its construction, and Diamond Cargo excels in this area. Unlike some competitors who may cut corners, Diamond Cargo utilizes robust materials and proven manufacturing techniques. The mainframes are constructed from heavy-duty steel tubing, providing a rigid and durable skeleton. Wall studs and roof members are spaced to maximize structural integrity, often at 16 inches on-center, a standard that ensures the trailer can handle road stress and heavy loads without flexing. The use of high-quality plywood for floors and walls, coupled with durable aluminum exteriors (often with color-matched screws for a clean finish), demonstrates a commitment to quality that goes beyond surface-level appearances. This factory-built excellence ensures every trailer meets a consistent standard of durability.
Long-Term Cost Savings and Investment Protection
Purchasing a Diamond Cargo trailer is an investment in longevity. The durable build quality reduces the likelihood of costly repairs associated with frame fatigue, water leaks, or axle issues down the road. An enclosed trailer safeguards your valuable cargo—be it expensive tools, classic vehicles, or business inventory—from the elements and potential theft, preventing losses that far exceed the trailer’s cost. Furthermore, Diamond Cargo trailers hold their value well due to their strong reputation, ensuring a better return on your investment if you ever decide to sell or upgrade.
Mastering Versatility: Ideal Use Cases for the 8.5x20 Double Axle Cargo Trailer
The 8.5x20 double axle trailer is a true multi-purpose workhorse. Its generous dimensions and substantial payload capacity make it an ideal choice for a vast range of applications, from demanding commercial jobs to exciting recreational pursuits.
Commercial Powerhouse: Supporting Businesses of All Sizes
For businesses, this trailer is a mobile asset that drives productivity. Landscaping companies can haul multiple zero-turn mowers and all their equipment in a single trip. Contractors can create a secure, mobile workshop, keeping tools and materials organized and protected on the job site. Mobile detailing businesses, food vendors, and trade show exhibitors all rely on the 8.5x20 enclosed trailer to serve as the backbone of their operations. Its capacity allows businesses to carry more inventory, serve more customers, and operate with greater efficiency.
Personal and Recreational Adventures: Haul Anything with Confidence
Beyond the job site, the 8.5x20 is a dream for hobbyists and adventurers. It’s perfectly sized to transport a wide variety of recreational vehicles, including UTVs, ATVs, snowmobiles, or a collection of motorcycles. Car enthusiasts find it an excellent solution for hauling a show car or race car to events, protecting their prized possession from road debris and weather. For families, it can be used for cross-country moves, hauling furniture, or storing seasonal items, offering a secure and weatherproof space.
Deep Dive into Specifications: Core Features of Diamond Cargo 8.5x20 Double Axle Trailers
While the overall size is important, the specific components and features are what define a trailer’s capability and reliability. Diamond Cargo equips its 8.5x20 models with a robust set of standard features designed for performance and user convenience.
Robust Chassis and Running Gear: The Foundation of Dependability
The trailer’s strength begins with its underpinnings. Diamond Cargo 8.5x20 trailers are built on a formidable foundation to handle significant weight and stress.
- Frame: A heavy-duty steel tube mainframe and tongue provide exceptional rigidity.
- Axles: Typically equipped with two 5,200 lb drop leaf spring axles, providing a combined capacity that easily supports heavy cargo. This double axle configuration ensures superior stability and safer towing.
- Brakes: Electric brakes on both axles are a critical safety feature, offering controlled and reliable stopping power.
- Tires: High-quality radial tires are standard, offering better durability and heat dissipation than cheaper bias-ply alternatives.
Functional and Secure Access Points
Easy and secure access to your cargo is paramount. Diamond Cargo trailers feature thoughtfully designed doors built for heavy use.
- Ramp Door: A spring-assisted rear ramp door is standard, making it easy for a single person to open and close. These ramps are built with a high weight capacity and often include a flap extension for a smooth transition.
- Side Door: A 36-inch side door with a secure RV-style flush lock provides convenient walk-in access without needing to lower the main ramp. This is essential for quickly grabbing a tool or checking on cargo.
Thoughtful Interior and Exterior Details
It’s the smaller details that elevate a good trailer to a great one. Diamond Cargo incorporates features that enhance usability and longevity.
- Interior Height: A generous interior height (often 6’6″ or more) allows most people to stand up comfortably, making it easier to work inside or maneuver cargo.
- Construction: Wall studs and tubular roof members are typically spaced 16″ on center for maximum strength.
- Exterior: Durable aluminum sheeting, often with semi-screwless or color-matched screws, provides a clean, professional look that resists corrosion.
- Lighting: DOT-compliant LED lighting ensures visibility and safety on the road, while interior dome lights provide visibility inside the enclosed space.
The Power of Selection: Tailoring Your 8.5x20 Diamond Cargo with Custom Options
While the standard Diamond Cargo trailer is incredibly capable, one of the brand’s greatest strengths is the extensive selection of options available. This allows you to create a custom trailer that is perfectly tailored to your exact requirements, transforming a standard hauler into a specialized tool.
Exploring Standard Models vs. Custom Built Trailers
Standard, in-stock models offer fantastic value and are ready for immediate delivery, covering the needs of most users. However, if you have a specific application in mind, ordering a custom trailer directly from the factory is the ideal path. This process allows you to select from a vast menu of upgrades and modifications, ensuring the final product is a perfect fit for your business or hobby.
Enhancing Functionality: Popular Customizations
The list of available options is extensive, allowing for near-limitless configurations. Popular functional upgrades include:
- Axle Upgrades: Increase payload capacity with heavier-duty 6,000 lb or 7,000 lb axles.
- Increased Height: Add extra interior height (e.g., 7′ or 7’6″) for hauling taller vehicles or for conversion into a workspace.
- Electrical Packages: Add outlets, interior and exterior lighting, and a breaker box to power tools or create a mobile workshop.
- Windows and Vents: Improve ventilation and natural light with side windows and roof vents.
- Flooring and Wall Options: Upgrade to durable rubber coin flooring, aluminum tread plate, or insulated, finished walls.
Personalizing Aesthetics and Brand Identity
For businesses, a trailer is a mobile billboard. Diamond Cargo offers a wide variety of color options for the exterior aluminum, allowing you to match your company’s branding. You can also add features like aluminum wheels or two-tone color schemes to create a distinctive look that stands out from the crowd.
Seamless Acquisition: Pricing, Financing, and Dedicated Customer Service
Diamond Cargo and its dealer network are committed to making the purchase process as smooth and transparent as possible. From initial inquiry to final delivery, the focus is on providing excellent service and ensuring you get the right trailer for your needs and budget.
Transparent Pricing and Obtaining Your Personalized Quote
Reputable dealers provide clear, upfront pricing on standard models. For a custom trailer, the sales team will work with you to understand your needs, review available options, and generate a detailed, itemized quote. This transparency ensures there are no surprises and you know exactly what you are paying for.
Flexible Financing Solutions to Fit Every Budget
An enclosed cargo trailer is a significant investment, and flexible financing options make it accessible to more buyers. Many dealers partner with lenders to offer competitive rates and terms for both commercial and personal financing. This allows you to get the trailer you need now and pay for it over time with manageable monthly payments.
The Customer-Centric Buying Journey
The buying process is designed to be straightforward. A knowledgeable sales team will guide you through the selection of models and options, answering any questions you have. They will perform final quality checks before you take possession and manage the logistics of pickup or delivery. This dedication to customer satisfaction ensures a positive experience from start to finish.
Conclusion: Drive Away with Confidence in Your Diamond Cargo 8.5x20 Double Axle Trailer
Choosing the right enclosed trailer is a critical decision that impacts your business’s efficiency or your recreational freedom. The 8.5x20 double axle Diamond Cargo trailer stands out as a superior choice, offering a powerful blend of size, strength, and adaptability.
Reiterate the Unmatched Value and Extensive Selection
Diamond Cargo delivers unbeatable value by combining robust, factory-direct construction with a fair price point. The extensive selection of customization options ensures that you don’t have to settle for a one-size-fits-all solution. You can build the exact trailer your work or passion demands, creating a long-lasting asset that performs flawlessly for years.
Your Trusted Partner for All Your Trailer Needs
From the initial quote and financing process to the final delivery, the goal is to be your trusted partner. By investing in a Diamond Cargo trailer, you are not just buying a piece of equipment; you are gaining a reliable tool backed by a commitment to quality and customer satisfaction.

Take the Next Step: Get Your Quote Today!
Whether you need a standard hauler for general use or a fully customized mobile workspace, the 8.5x20 double axle Diamond Cargo trailer is ready to meet the challenge. Explore the variety of trailers and options available. Contact a sales expert today to discuss your needs and receive a personalized quote for your perfect enclosed cargo trailer.
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