2026 Grand Design Momentum G-Class 320G

New Fifth Wheel in Fort Worth, Texas, 76140

$113,895.00

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New 2026 Grand Design Momentum G-Class 320G available in Fort Worth, Texas

2026 Grand Design Momentum G-Class 320G - New Fifth Wheel For Sale by McClain's RV Fort Worth in Fort Worth, Texas features Awning, Oven, Roof Vents, TV, Exterior Speakers

2026 Momentum G-Class 320G by Grand Design from McClain's RV Fort Worth in Fort Worth, Texas

Unit Specs

Stock #15003
Year2026
ManufacturerGrand Design RV
Make Grand Design
ModelMomentum G-Class
Floorplan320G
Type Fifth Wheel
ConditionNew
Length36' 3"
Width8' 5"
Height13' 5"
VIN573FM3828TBB04536
MSRP $134,106.00
Sale Price $113,895.00
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Sleeps7
Water Capacity (Fresh)110 gal
Water Capacity (Black)104 gal
Water Capacity (Grey)52 gal
Air Conditioners1
A/C Spec30000, BTU's
Slideouts3
Dry Weight12,400 lbs
Tow/Hitch Weight2300 lbs
# Axles2

Looking to buy a 2026 Grand Design Momentum G-Class Fifth Wheel RV?

The Grand Design Momentum G-Class 320G blends rugged capability with residential comfort in a compact 36-foot 3-inch fifth-wheel design. Built on a durable aluminum cage chassis, it boasts a dry weight of 12,400 lb, a gross vehicle weight rating (GVWR) of 16,400 lb, and a hitch weight of 2,300 lb—towable by many heavy-duty trucks.

Designed for thrill-seekers, the rear houses an 11-foot garage with built-in 2,500-lb tie-downs and a fuel station with interior and exterior gauges. The ramp doubles as a patio, supported by robust insulation including R-40 roof and floor, heated/enclosed underbelly, and high-capacity heating for year-round comfort.

The interior features a bath and a half, loft sleeping, and a living room with a fireplace and theater seating slide—all bathed in natural light via panoramic windows and brightened by USB-charged residential cabinetry.

Utility isn’t overlooked: you’ll find a full kitchen, dual-entry doors, large holding tanks (98 gal fresh, 52 gal gray, 104 gal black), 30-gal fuel tank, and solar prep supporting extended off-grid living.

Compact yet packed with purpose, the 320G delivers heavy-duty hauling means and true home-away-from-home comfort for the modern adventurer.

View a video of this 2026 Grand Design Momentum G-Class 320G RV on YouTube!

2026 Grand Design Momentum G-Class 320G Features

Appliances
Microwave, Oven, Refrigerator, Stove Top Burner, Water Heater
Electrical
Air Conditioning, Auxiliary Battery
Equipment
CO Detector, LP Detector, Smoke Detector, TV
Exterior
Awning, Exterior Speakers, External Shower, Ladder, Leveling Jacks, Power Roof Vent, Skylight, Slideout, Spare Tire Kit
Interior/Furnishings
Bunk Beds, Fireplace, Medicine Cabinet, Queen Bed, Roof Vents, Shower, Toilet
Horse / Livestock / LQ / Tack
Insulated

2026 Grand Design Momentum G-Class 320G Specifications

General

MSRP

$112,652

Dimensions

Height

13' 6"

Height (interior)

8' 7"

Length

36' 3"

Width

8' 5"

Weights

Dry Weight

12,400 lbs

GVWR

16,400 lbs

Hitch Weight

2,300 lbs

Payload Capacity

4,000 lbs

Capacities

Refrigerator Capacity

15 cu ft

Sleep Capacity

Water Capacity - Black

104 gal

Water Capacity - Fresh

98 gal

Water Capacity - Grey

52 gal

Exterior

# Awnings

# Axles

# Doors

# Slides

Chassis

101" Wide-Body Super Chassis

Hitch

Fifth Wheel

Rear Opening

Ramp

Electrical

# A/C

A/C Spec

30,000 BTU

*MFG Specs are for base unit. Certain options may change specifications listed. Please consult dealer for more details. Data is provided by a 3rd party. RVUSA.com cannot guarantee the accuracy of the data presented.