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New 2021 Grand Design Momentum M-Class 398M-R

Virtual Tour
2021 398M-R Features and Options

Grand Design Momentum M-Class toy hauler 398M-R highlights:

  • Fireplace
  • Queen Bed
  • Kitchen Island
  • Dual Entry Doors
  • Universal Docking Station

 

This toy hauler is decked out in luxurious features you will want on your next outdoor adventure! With 18' of cargo space and a rear ramp door, you can bring along your favorite off-road toys too. You will start each morning feeling clean and fresh after a good night's rest on the queen bed in the front private bedroom and showering in the sunken tub with seat and skylight above. The kitchen has everything you will need to create home cooked meals, as well as a kitchen island with two bar stools and a USB charging port. Grab a snack from the kitchen pantry and relax on the four-seat sofa slide with a stowable table to set your food on. The garage area has an overhead bed, the space to add the optional two Happ-Jac's with rollover sofas and table below, and it is prepped to add the optional washer and dryer, plus you can even add the optional half bathroom! If you would prefer to have an 18-cubic foot RV refrigerator, you should check out model 398M-R!

 

Live big and play even harder with any one of these Momentum M-Class toy hauler fifth wheels by Grand Design! The CRE3000 MORryde® suspension system improves its towability with a smoother tow and better protects from damaging road shock. Unlike many other toy haulers, Momentum features an exclusive garage floor design with a R-40 triple insulation in the garage floors, and a Weather-Tek insulation throughout the roof, main floor, and side walls. Pump up the volume and shake things up with the optional Rockford Fosgate speaker package that comes with a 12" subwoofer, a 400 watt amp, and eight 6" full range speakers. You will also enjoy the fully enclosed fuel pump station, the door side exterior spray port, and the four mandatory packages full of extra features that will make your next camping adventure luxurious!

What Our Customers Are Saying

People are friendly and helpful

Great place.... Went to look at a unit and ended up buying a different floor plan. Well worth the time to go check out their units. People are friendly and helpful. - Don from Spring Hill, KS
MSRP: $110,774
Location: Grain Valley, MO
Stock# L20581
2021 398M-R Specifications
Sleeps 5
Slides 3
Length 43 ft 11 in
Ext Height 13 ft 5 in
Interior Color Pebble
Hitch Weight 2980 lbs
Gross Weight 20000 lbs
Dry Weight 15314 lbs
Fresh Water Capacity 155 gals
Grey Water Capacity 104 gals
Black Water Capacity 52 gals
Tire Size 16"
Furnace BTU 35000 btu
Fuel Capacity 60 gals
Available Beds Queen
Refrigerator Type Residential
Cooktop Burners 3
Number of Awnings 2
Axle Weight 7000 lbs
Garage Size 18 ft
LP Tank Capacity 60 lbs
Water Heater Capacity 12 gal
Water Heater Type Gas/Electric
AC BTU 30000 btu
TV Info LR 49" LED TV
Awning Info 15' and 18' Power with LED Lights
Axle Count 3
Washer/Dryer Available Yes
Shower Type Sunken Tub/Shower
Electrical Service 50 amp
VIN M1119501

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For more information, call us at 816-847-1699 or Contact Us
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Thank you for taking the time to view and consider Grand Design RVs, where we build every RV to deliver more features and superior value for your dollar, then we back every one of our coaches with a 3-year limited structural warranty.
 
Every Grand Design RV is put through a series of quality inspection gates during the manufacturing process.  Once completed, the unit undergoes a comprehensive final finish inspection before being delivered to our dealer network for you to view or test drive.
 
We deliver the highest quality RVs in the industry, but anything built by humans can be subject to issues.  It’s how those issues are addressed that stands out with Grand Design. We stand behind our products, and stand ready to assist customers whenever needed.
 
At Grand Design our goal is simple...Continue leading the industry with quality products while improving the customer's RV experience before, during, and after the sale.
Lifestyle RVs is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us @816-847-1699 for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.
* Trade-in may affect the final sales price.