New 2021 Grand Design Momentum 399TH
ARRIVING SOON


- 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!
Affinity RV was awesome! They were very kind, professional and helpful. Thank you Affinity! Facebook March 18,2020 - Kim from
Stock# 0030110
Exterior Color: Burnt Orange, Silver, Blue, Burgundy, White Pearl
Interior Color: Mocha, Oakley
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 |
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