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2026 Grand Design Momentum 392M
NewStock #MN26019
Listing price
2026 Momentum 392M
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
The Grand Design Momentum 392M gives your toys a generous 17-foot garage, with an optional aluminum deck system that turns the rear ramp into an elevated outdoor space. Up front, the living area features a fireplace, LED Smart TV, Rockford Fosgate entertainment system, and a professional four-burner cooktop with a 24-inch oven. Its full bath includes a glass-door shower with a teak bench, while the optional Extreme Lithium Package adds 800 Ah of battery capacity, dual hybrid inverters, and roof-mounted solar panels for extended off-grid stays.
Length
45 ft 11 in
Dry weight
16,982 lbs
GVWR
22,500 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.
$114,999 – $149,989
This unit has been on the lot longer than 120 days.
This unit is ranked 3 of 14 by asking price in this group.
The listing price on this unit has changed 5 times.
See the complete price timeline and the rest of this unit's pricing insights.
Mike Thompson's RV
Fountain Valley, CA
Sells faster than 76% of California RV dealers
Compared with 57 dealers in California
Grand Design Momentum M-Class toy hauler 392M highlights:
L-Shaped Sofa with Recline
Queen Bed
Overhead Loft Bed
Ramp Door/Patio
This toy hauler with a 17' separate garage will be perfect for your outdoor adventures. There is an adjustable tie-down system to keep your gear secure, an overhead loft bed, plus an optional half bath. And two optional Liftsuite Systems can be added if you need more sleeping space. There is also washer and dryer prep here, along with a flip-up pet dish for your furry friends. The chef will love the large kitchen countertop for more meal prep space, and there is a 20 cu. ft. refrigerator and pantry for food storage. You can get comfy on the L-shaped sofa across from the 50" TV, or get some work done at the hybrid desk/dinette. There are also dual opposing slides here for added space. The third slide out is found in the front master bedroom, which includes drawers and storage space for your things. A queen bed will provide a great night's rest, and you have the option to choose a king bed if you want more space to stretch out!
With any Momentum M-Class toy hauler by Grand Design, you will enjoy luxury at every turn! They have been constructed to a superior standard with a thermal roof design, triple insulated main floor and garage floor, and a Rail-Tite underbelly seal that will allow you to camp in all elements. Each model also features an 8' 5" wide body chassis with a wide rail design, no wheel wheels, and a dovetail entry for easier loading. The Stealth A/C system provides maximum cooling power, and the CRE3000 suspension system means you can enjoy a smooth tow each time. You will love the luxurious interior with a professional grade stainless steel cooktop, interior color changing LED accent lighting, a fiberglass shower with a glass door, and solid surface countertops.
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