New 2026 Grand Design Momentum 399M
Description
Grand Design Momentum fifth wheel toy hauler 399M highlights:
Front Private Bedroom
Kitchen Island
Hybrid Desk/Dinette
Unobstructed Pass-Thru Storage
Side Patio
This toy hauler h...
RV Details
RV Type
Fifth Wheel
Make
Grand Design
Year
2026
Sleeping capacity
4
Weight
22,500 lbs
Condition
New
Stock #
MN26026
VIN
573FM4739TBB04657
Exterior Color
STANDARD PAINT
Interior Color
SLATE- STANDARD WOOD
Additional Specifications
Powertrain
Dimensions & Weight
Tank Capacities
Location
Showing dealer's exact location.
Location
Colton, CA
Frequently Asked Questions
How much does a 2026 Grand Design Momentum cost?
This 2026 Grand Design Momentum is listed at $164,995. The average Fifth Wheel listing on TrueRVs is $91,919. Higher pricing may reflect lower mileage, better condition, or additional features.
What type of RV is the Grand Design Momentum?
The Momentum is a Fifth Wheel. It measures 45 feet in length. It has 3 slide outs for additional living space when parked. Fifth wheels are large towable RVs that connect to a pickup truck via a hitch mounted in the truck bed.
How many people does the Grand Design Momentum sleep?
The Momentum sleeps up to 4, suitable for a small family or a couple traveling with kids.
How much does the Grand Design Momentum weigh?
At 22,500 lbs, this Momentum is a heavy unit that requires a one-ton truck or larger with a properly rated hitch and brake controller.
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