2026 Grand Design Momentum M-Class 399M
New Toy Hauler in Southaven, Mississippi, 38671
Unit Specs
- Stock #GR2490
- Year2026
- ManufacturerGrand Design RV
- Make Grand Design
- ModelMomentum M-Class
- Floorplan399M
- Type Toy Hauler
- ConditionNew
- VIN573FM4734TBB04792
- Price $195,986.00
- Sale Price $134,995.00
- Need to know your payment? Use our RV Loan Calculator!
2026 Grand Design Momentum M-Class 399M
Our top-of-the-line Momentum Fifth Wheel Toy Haulers are — inside and out — our most luxurious Toy Haulers. With the comfort of a master suite and master bath, home’s now a long way from your house.
Features may include:
- Thermal Roof Design (R-40)*
- Fully Laminated Walls (R-11)*
- Triple Insulated Main Floor (R-45)*
- Triple Insulated Garage Floor (R-40)*
- 1.5" Insulated Baggage Doors
- Vented Attic
- Insulated Gooseneck
- Rail-Tite Underbelly Seal
This 2026 Grand Design Momentum M-Class 399M is outfitted with all the features you need for happy camping. Ready to be a proud Grand Design owner? This 2026 Grand Design Momentum M-Class 399M is the perfect fit.
2026 Grand Design Momentum M-Class 399M Features
2026 Grand Design Momentum M-Class 399M Specifications
MSRP
$174,278
Height
13' 6"
Height (interior)
8' 5"
Length
44' 10"
Width
8' 5"
Dry Weight
18,000 lbs
GVWR
22,500 lbs
Hitch Weight
3,464 lbs
Payload Capacity
4,500 lbs
Refrigerator Capacity
20 cu ft
Sleep Capacity
6
Water Capacity - Black
52 gal
Water Capacity - Fresh
140 gal
Water Capacity - Grey
104 gal
# Awnings
3
# Axles
3
# Doors
3
# Slides
3
Chassis
101" Wide Body Super Chassis w/Drop-Frame Storage
Hitch
Fifth Wheel
Rear Opening
Ramp
# A/C
1
A/C Spec
30,000 BTU
2026 Grand Design Momentum M-Class 399M Literature
Unit Specs
- Stock #GR2490
- Year2026
- ManufacturerGrand Design RV
- Make Grand Design
- ModelMomentum M-Class
- Floorplan399M
- Type Toy Hauler
- ConditionNew
- VIN573FM4734TBB04792
- Price $195,986.00
- Sale Price $134,995.00
- Need to know your payment? Use our RV Loan Calculator!
Estimated Payment-
Email Dealer
Request More Info on this 2026 Grand Design Momentum M-Class 399M Offered for sale by Southaven RV & Marine
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