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New 2021 Grand Design Momentum 399TH

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2021 399TH Features and Options
Contact Affinity RV at 1-800-756-2007 and start your RV dreams today!
Grand Design Momentum 399TH toy hauler highlights:
  • Dual Entry
  • Kitchen Island
  • Exterior LED TV
  • Dual Enclosed Fuel Station
  • Spray Port

 

If you are ready to play with your off-road toys, hitch up this Momentum 399TH fifth wheel toy hauler after loading your toys in the 13' garage. You will be able to get cleaned up after getting muddy from the trails in the half bath in the garage or the full bathroom next to the bedroom.  The kids can sit on the bar stools at the kitchen island, or relax on the dinette and theater seats while watching the 49" LED TV and fireplace.  There are several options to choose from, and many more features to enjoy such as the dual entry doors, fold-down side patio with LED TV, and exterior unobstructed pass-through storage, plus more!

 

With any Momentum toy hauler fifth wheel you will enjoy extraordinary living with extreme playtime with the Weather-Tek insulation for four seasons of protection, and a fully enclosed fuel pump station to keep the fun going the whole time.  The Tuff-Ply garage flooring is gas and oil resistant and includes 2,500 lb. rated flush-mount tie-downs to keep your toys secure while moving down the road. The interior includes a sofa with headrest and removable swivel table, a convection microwave, a central vacuum system with tools and a dust pan, and a satellite/solar roof access channel to mention a few highlights.  Any Grand Design Momentum allows you to keep your active lifestyle no matter where you decide to stay!

What Our Customers Are Saying

Ivan Reed

All staff were accommodating and very helpful. Enjoyable experience, and confident that any problems that might arise will be dealt with expediently. - Ivan from Prescott, AZ
Location: Prescott, AZ
Stock# 0030110
2021 399TH Specifications
Sleeps 7
Slides 3
Length 43 ft 4 in
Ext Height 13 ft 5 in
Interior Color Mocha, Oakley
Exterior Color Burnt Orange, Silver, Blue, Burgundy, White Pearl
Hitch Weight 3400 lbs
Gross Weight 20000 lbs
Dry Weight 15900 lbs
Fresh Water Capacity 157 gals
Grey Water Capacity 104 gals
Black Water Capacity 104 gals
Tire Size 16"
Furnace BTU 40000 btu
Fuel Capacity 60 gals
Number Of Bunks 1
Available Beds Queen
Refrigerator Size 18 cu ft
Convection Cooking Yes
Cooktop Burners 3
Number of Awnings 2
Axle Weight 7000 lbs
Garage Size 13 ft
LP Tank Capacity 30 lbs
Water Heater Capacity 12 gal
Water Heater Type Gas/Electric
AC BTU 30000 btu
TV Info LR 49" LED, BR 32" LED, Garage 32" LED, Ext. LED
Awning Info 14' & 16' Power
Axle Count 3
Washer/Dryer Available Yes
Number of LP Tanks 2
Shower Type Shower w/Seat
Electrical Service 50 amp
For more information, call us at 928-445-7910 or Contact Us
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ManuFacts
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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.
Affinity RV 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 @928-445-7910 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.