Toy hauler, side patio, bath and a half, bar seating
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2023 Grand Design Momentum 399TH
UsedStock #26C1071
Listing price
2023 Momentum 399TH
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
Grand Design's Momentum 399TH is a toy hauler that doesn't feel like one once you're inside. The side patio creates an outdoor living area that's genuinely usable, not just a bonus feature, and the apartment-like interior backs that up with a kitchen island, bar seating, and a north/south bed in the front bedroom. The 13-foot garage handles serious gear, and the R40 triple-insulated floor means it's built for more than fair-weather camping. Bath and a half keeps things practical when you've got a full crew, and Grand Design's reputation for fit and finish shows throughout.
Length
43 ft 1 in
Dry weight
15,900 lbs
GVWR
20,000 lbs
Sleeps
5
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
There may be room for price negotiation.
$52,999 – $110,985
This unit has been on the lot for 30 days or less.
This unit is ranked 11 of 14 by asking price in this group.
The listing price on this unit has changed 1 time.
See the complete price timeline and the rest of this unit's pricing insights.
Windish RV
Lakewood, CO
Sells slower than 87% of Colorado RV dealers
Compared with 16 dealers in Colorado
Grand Design Momentum fifth wheel toy hauler 399TH highlights:
Fold-Down Side Patio
13' Garage
Bath and a Half
Dual Entry
Island with Bar Stools
60 Gallon Fuel Tank
Get ready for a lot of fun when you head out to the off-road park, a special event, or a long trip with your toys! You will love the garage with the Fast Ramp rear ramp door, the Ram-Air garage vents on both sides, the 2,500 lb. rated flush-mount tie-downs and the protective diamond plate on the garage sidewalls. This area can become a bedroom or an extra living area if you want to add Happi-Jac rollover sofas/table with a top bed option, plus you will already have a half bath for convenience, an LED TV and storage for your gear. The living and kitchen area is spacious with dual slides and a kitchen island with bar stools, a free standing table and theatre seating or choose the super sofa option, and everything you need to feed everyone. The fold-down side patio offers an LED TV, storage and a great place to relax outdoors above ground. There are many more features to enjoy, and several options to customize your fifth wheel.
The Momentum fifth wheel toy haulers by Grand Design are built for four seasons of travel with your off-road toys and include luxurious accommodations throughout for extreme living! Each is constructed to a superior standard with the thermal roof design, the full-laminated walls, and the triple insulated garage floor. The MORryde CRE3000 suspension system and rubber pin box, plus the upgraded axle hangers provide the performance and smooth towing you desire, while the interior offers luxury such as color changing LED accent lighting, raised panel hardwood cabinet doors with hidden hinges, and a central vacuum system. Each toy hauler also includes four packages, including the Garage Package with Tuff-Ply gas and oil resistant flooring, the Weather-Tek Package with a Stealth AC System, and the Interior Luxury Package with solid surface countertops!
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