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The DX3: A Super C RV Diesel Dynamax Motorhome

Published on March 25th, 2022 by Emily Lawrence

stock photo of Super C RV Diesel Dynamax
The DX3, a Super C RV from Dynamax

The DX3 Super C RV Diesel Dynamax Motorhome

Super C motorhomes are a wonderful blend between the size of a Class A and the driveability of a Class C. The DX3 from Dynamax is a fantastic vehicle that gives you plenty of luxury space but is still a manageable size for driving.

If you’re interested in the potential of a Super C motorhome, keep this brand in mind. The DX3 comes in 4 different floor plans, so one of them may work better than another for you.

Below we’ll explore some of the details and upgrades you can expect from these luxury motorhomes. They are virtually a luxury apartment on wheels, so you can rest assured that your journey will always be comfortable when you travel in a Super C RV diesel Dynamax motorhome.

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Overview and specs

These motorhomes are built on a Freightliner® M2 106 Chassis. This is a heavy-duty chassis that resembles the front of a semi-truck. This gives them a lot of power, so they are capable of towing 20,000 lbs in addition to the weight of the motorhome itself. If you’re looking for a motorhome that can tow an extra car or boat behind it, this is the pick for you!

There are 4 different floor plans in the Super C RV diesel Dynamax motorhome family, but they are all fairly similar in terms of their specs, weights, and measurements. These motorhomes are all in the 36-40 foot range. Although this is bigger than some RVs, they are still within a reasonable range for most campgrounds and resorts. They can also be driven on standard roads without much difficulty.

Some basic specs are listed below. Due to the slight differences in the floor plan designs, one floor plan usually has slightly different specs compared to the others. However, most of them align with the weights and measurements outlined below. Be sure to visit the product page here for full details and breakdowns on each design.

  • Wheelbase: 268 inches (22.3 feet)
  • Gross Vehicle Weight Rating: 33,000 lbs
  • Fuel Capacity: 100 gallons
  • Awning Size: 18 feet
  • Fresh Water Capacity: 94 gallons

Dynamax DX3 Floor Plans

As stated above, the DX3 comes in 4 different layouts. Some of these floor plans are quite similar with only minor changes. However, even little tweaks can make a big difference when it comes to motorhomes. After all, every inch counts when you’re designing a mobile living space.


The 34KD is the smallest floor plan on the list, but it is still well-thought-out. With 36 feet to work with, there’s plenty of room for storage, furniture, and amenities. The rear bedroom in this floor plan has a king bed that sits partially within a slideout. Between the bedroom and the living room is a split design bathroom.

This bathroom has a sliding door that can seal it off from the living room, or it can be left open to grant everyone access to the sink and cabinets. The toilet and shower sit in a separate enclosed room across the hall. Passengers can either close off the living room entrance and use this design as a private bathroom or open up the space for everyone to pass in and out.


The 37BD design is a bunkhouse model. It has a king bed in the rear (which sits flush against the wall instead of in a slideout), but it also has a pair of bunk beds that are inlaid in the wall just outside this bedroom. These beds are right across from the unit’s bathroom, so everyone can access it as needed.

The living room features a tri-fold sofa that can be converted into another bed if the need arises. On the opposite wall, there’s an entertainment center that consists of a fireplace and TV, so everyone in the dinette and sofa can face it easily.


A defining characteristic of the 37RB floor plan is the rear bathroom. Like all the others, this design has a rear master bedroom. The king bed sits in a slideout in the 37RB, and the very back wall is occupied with a spacious master bathroom. A sliding door grants access to the shower, toilet, dual-basin sink, and a variety of cabinets and storage areas.

There is also a small half bath that sits outside the main bedroom, which is handy for visitors. This unit also comes with a spacious closet, a tri-fold sofa, and a kitchen setup with a good amount of workspace.


One of the defining traits of the 37TS is the fact that it has three slideouts instead of two. One is used to expand the bedroom, while the other two are opposing slideouts that contain the kitchen and living room furniture respectively. When all three are fully expanded, the main space feels much roomier.

This floor plan also has the same split bathroom design that was featured in the 34KD. The kitchen is a bit more condensed so that there’s room for a love seat within the same slideout.

To view the details of each floor plan, visit the Dynamax product page here. You also can tour 3D virtual layouts for 3/4 of these designs.


In addition to the standard necessities for a motorhome, the DX3 offers some luxurious amenities. These Super C RV diesel Dynamax motorhomes were made with fantastic appliances and materials. Some of the best features include:

  • Hardwood cabinetry
  • A large stainless steel residential refrigerator (with a built-in ice maker)
  • A touch screen dash infotainment system that’s compatible with Apple and Android
  • Smartphone app control for many of the vehicle utilities and functions
  • King beds with a gel-infused memory foam mattress
  • DVD players and monitors for each bunk bed
  • 39″ LED TV
  • Deluxe carpeting in certain areas
  • Shower skylights
  • And much more!

Storage space is also a priority for these motorhomes, so you can bring just about anything you want on the road with you. If you find that you need an extra car or storage trailer, these motorhomes are also powerful enough to easily tow them.

Add-ons and upgrades

The base models of these motorhomes are already luxurious and perfectly usable. But, if you’re like to make some personalized tweaks and substitutions, that’s an option too. Each Dynamax motorhome has a variety of add-ons and upgrades.

For instance, if you need more sleeping space, you could opt to add an extra bunk above the driver’s cab. This space is easy to convert and it won’t cut into the rest of the living room. Washers and dryers can also be added to most of these floor plans, which is essential for large families and full-time RVers.

A few of these designs come with an entertainment center and fireplace built-in, but you can always add one if you pick a model that doesn’t have it. There are also different options for exterior paints, equipment packages, and electronic setups.

You can craft the motorhome of your dreams when you explore all the options of a Super C RV from Dynamax!

One of the best parts about RVing is engaging with the community of traveling enthusiasts. iRV2 forums allow folks to chat with other RVers online, and get other perspectives on everything RVing, including products, destinations, RV mods, and much more.

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