New 2024 Grand Design Momentum 399TH Toy Hauler Fifth Wheel

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2024 399TH Features and Options

Grand Design Momentum Fifth Wheel Toy Hauler 399TH Highlights:

  • Fold-Down Side Patio
  • 13' Garage with Dual Entry
  • Bath and a Half
  • Island with Bar Stools
  • 60-Gallon Fuel Tank

 

Get ready to elevate your adventure with the Grand Design Momentum 399TH Fifth Wheel Toy Hauler! Whether you're heading to an off-road park, a special event, or on a long road trip, this toy hauler has everything you need to make your experience unforgettable.

 

The 13' garage is designed for your toys with features like a Fast Ramp rear ramp door, 2,500 lb. rated flush-mount tie-downs, and protective diamond plate on the sidewalls. Plus, the Ram-Air garage vents on both sides provide optimal airflow. This versatile space can transform into an additional bedroom or living area with the optional Happi-Jac rollover sofas/table with top bed, plus you’ll have your very own half bath, LED TV, and ample storage for all your gear.

 

Inside, the spacious living and kitchen area welcomes you with dual slides, a center island with bar stools, a free-standing table, and luxurious theatre seating (or choose the super sofa option). With everything you need to make meals for the crew, you’ll enjoy all the comforts of home while on the go.

 

The fold-down side patio adds even more outdoor living space, complete with an LED TV, storage, and an elevated area for relaxation above ground.

 

Built for All Seasons, All Adventures
The Momentum 399TH is built to handle extreme weather conditions and outdoor adventures year-round. Featuring a thermal roof design, full-laminated walls, and a triple-insulated garage floor, this toy hauler ensures maximum durability and comfort, no matter the season.

 

The MORryde CRE3000 suspension system, upgraded axle hangers, and rubber pin box provide a smooth towing experience, while the interior is designed with luxury in mind. Enjoy color-changing LED accent lighting, raised panel hardwood cabinet doors with hidden hinges, and a central vacuum system to make cleanup a breeze.

 

Customize your toy hauler with four fantastic packages:

  • Garage Package: Featuring Tuff-Ply gas and oil-resistant flooring.
  • Weather-Tek Package: Equipped with a Stealth AC System for all-weather camping.
  • Interior Luxury Package: Solid surface countertops throughout.
  • Tech Package: Offering high-tech features for the ultimate convenience.

 

With the 60-gallon fuel tank and ample storage space, the Grand Design Momentum 399TH is designed to take you on your next adventure with ease and comfort.

 

 

Get Ready to Explore in Style—Choose the Momentum 399TH Toy Hauler Today!

Options:
  • MOMENTUM INTERIOR PACKAGE
  • EXTERIOR PACKAGE
  • GARAGE PACKAGE
  • WEATHER-TEK INSULATION PACKAGE
  • UNDER-UNIT LED LIGHT KIT
  • BEDROOM A/C
  • UPGRADED COOPER H-RATED TIRES
  • EXTERIOR ENTERTAINMENT CENTER
  • 3RD A/C PREP
  • AUX. FRESH WATER TANK
  • 20CU FT. 12V FRIDGE (+ INVERTER PREP, 330W SOLAR PANEL, 50 AMP CONTROLLER, BLUETOOTH MODULE, AND 2 DOCK PORTS)
  • TRAVLFI ON-BOARD WIFI READY
  • SAFERIDE RV ROADSIDE ASSISTANCE
  • KING BED UPGRADE
  • YAMAHA 6kw GAS GENERATOR
  • GEN2 3-SEASON DOOR WITH SLIDING WINDOWS
  • 3RD A/C
  • HEAT PUMP A/C
  • HAPPI-JAC ELECTRIC BUNK SYSTEM W/FOLDING SOFAS
  • REAR ALUMINUM DECK SYSTEM W/REAR POWER AWNING
  • MOMENTUM PATIO CHAIRS
  • SOLAR+ PACKAGE
  • 7K AXLE W/ABS BRAKES (TRIPLE AXLE)
  • WINTERIZATION
  • CDL FEE
  • RVIA SEAL
What Our Customers Are Saying

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Did not buy today, but I will be back! Shawn showed me what I asked to see and walked me through what might fit my needs. I am coming back when I'm ready to buy. Best prices on 2025 units. - Paul
 
Campers Inn
Location: Tucker GA
Stock# 93222
To get help now on this RV, call and enter the RV ID if prompted.
RV ID: 2407760#
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2024 399TH SpecificationsShow Definitions
Sleeps 5
Slides 3
Length 43 ft 1 in
Ext Width 8 ft
Ext Height 13 ft 5 in
Interior Color SILVER MAPLE
Hitch Weight 3400 lbs
GVWR 20000 lbs
Dry Weight 15900 lbs
Fresh Water Capacity 155 gals
Grey Water Capacity 104 gals
Black Water Capacity 104 gals
Tire Size 17.5"
Furnace BTU 40000 btu
Fuel Capacity 60 gals
Available Beds Queen
Refrigerator Type 12V Stainless Steel
Refrigerator Size 20 cu ft
Cooktop Burners 3
Number of Awnings 2
Axle Weight 7000 lbs
Garage Size 13 ft
LP Tank Capacity 30 lbs
AC BTU 30000 btu
TV Info LR 49" LED TV, BR LED TV, Garage 32" LED TV, Ext. LED TV
Awning Info 14' & 16' Power w/LED Lights
Axle Count 3
Washer/Dryer Available Yes
Number of LP Tanks 2
Shower Type Sunken Tub/Shower
Electrical Service 50 amp
VIN 573FM4532RBB01983
For more information Contact Us

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