The Grand Design Momentum G-Class 350G delivers a perfect balance of residential comfort and rugged toy-hauling performance. Designed for thrill-seekers who demand both space and sophistication, this fifth-wheel toy hauler is built to go further, stay longer, and relax better — wherever your adventure takes you.
At approximately 12,950 lbs. dry weight and a GVWR of 18,000 lbs., the 350G is engineered for serious hauling. Its 14′ 6″ garage easily fits ATVs, UTVs, motorcycles, or bikes — and converts into a patio deck when the toys are unloaded. The rear ramp patio system adds extra living space, while the enclosed underbelly, high-capacity furnace, and insulation package make this a true four-season toy hauler.
Inside, the Momentum G-Class feels like home. Enjoy theater seating, a fireplace, residential kitchen appliances, and an open-concept layout with plenty of natural light. The main suite offers a private bedroom with wardrobe slide and luxury bath amenities including a glass-door shower and linen storage. The garage’s half bath, loft area, and convertible seating ensure everyone travels in comfort.
The Grand Design Momentum G-Class 350G is built for those who live to explore. Whether it’s off-road weekends or full-time RV living, this model delivers the durability, technology, and luxury you deserve.
Stop by Sonny’s RVs in Casper, Wyoming, to experience the Momentum difference — where innovation meets adventure.
Information and features are based on manufacturer data and may vary from the actual unit. Sonny’s RVs is not responsible for errors or omissions. Prices and availability may change without notice. Buyers must verify all details, features, and conditions with a Sonny’s RVs sales representative before purchase.
| Stock # | N25-8919 |
| Location | Sonnys RVS |
| Year | 2025 |
| Make | Grand Design |
| Model | Momentum G-Class |
| Trim | 350G |
| Condition | NEW |
| Status | In Stock |
The Grand Design Momentum G-Class 350G delivers a perfect balance of residential comfort and rugged toy-hauling performance. Designed for thrill-seekers who demand both space and sophistication, this fifth-wheel toy hauler is built to go further, stay longer, and relax better — wherever your adventure takes you.
At approximately 12,950 lbs. dry weight and a GVWR of 18,000 lbs., the 350G is engineered for serious hauling. Its 14′ 6″ garage easily fits ATVs, UTVs, motorcycles, or bikes — and converts into a patio deck when the toys are unloaded. The rear ramp patio system adds extra living space, while the enclosed underbelly, high-capacity furnace, and insulation package make this a true four-season toy hauler.
Inside, the Momentum G-Class feels like home. Enjoy theater seating, a fireplace, residential kitchen appliances, and an open-concept layout with plenty of natural light. The main suite offers a private bedroom with wardrobe slide and luxury bath amenities including a glass-door shower and linen storage. The garage’s half bath, loft area, and convertible seating ensure everyone travels in comfort.
The Grand Design Momentum G-Class 350G is built for those who live to explore. Whether it’s off-road weekends or full-time RV living, this model delivers the durability, technology, and luxury you deserve.
Stop by Sonny’s RVs in Casper, Wyoming, to experience the Momentum difference — where innovation meets adventure.
| General | |
|---|---|
| Class | Fifth Wheel |
| Secondary Category | Toy Hauler |
| Other Specifications | |
|---|---|
| Wheels Composition | Aluminum |
| Number Of Axles | 2 |
| Front Brake Type | Not Applicable |
| Rear Brake Type | Electric Drum |
| Width (IN/MM) | 8.42 ft. (101 in.) |
| Length (FT/IN) | 39' 9" |
| Gross Weight Rating (LB/KG) | 16,800 lbs. LBS |
| Number Of Propane Tanks | 2 |
| Total Propane Tank Capacity (GAL/LBS) | 60 lbs. |
| Body Material | Fiberglass |
| Number Of Doors | 2 |
| Number Of Slideouts | 3 |
| Awning Length (FT/M) | 18 ft. (216 in.) |
| Power Retractable Awning | Yes |
| Kitchen Location | Center |
| Living Area Location | Center |
| Number Of Oven Burners | 4 |
| Overhead Fan | Yes |
| Layout | Oven / Stove |
| Refrigerator Power Mode | Electric |
| Number Of Sofas | 1 |
| Sofa Material | Vinyl |
| Reclining Sofa | Yes |
| Max Sleeping Count | 7 |
| Number Of Bunk Beds | 1 |
| Number Of Double Beds | 0 |
| Number Of Full Size Beds | 0 |
| Number Of Queen Size Beds | 1 |
| Number Of King Size Beds | 1 |
| Number Of Convertible Sofa Beds | 1 |
| Bunkhouse | No |
| Number Of Bathrooms | 2 |
| Bathroom Flooring Type | Vinyl |
| Bathroom Location | Center |
| Toilet Type | Plastic |
| Bathroom Sink | Center |
| Bathroom Medicine Cabinet | Center |
| Bathroom Mirror | Center |
| Bathroom Vent Fan System | Center |
| Battery Power Converter | Yes |
| Air Conditioning Prewiring | Yes |
| Cable Prewiring | Yes |
| Phone Prewiring | No |
| Heat Prewiring | Yes |
| TV Antenna Prewiring | Yes |
| Satellite Prewiring | Yes |
| Washer/Dryer Prewiring | Yes |
| Air Conditioning Type | Automatic |
| Heater Type | Automatic |
| Water Heater Pump Power Mode | Electrical / Propane |
| Number Of Radios | 1 |
| Surround Sound | Yes |
| Rear Video Backup Camera | Yes |
| Wallpaper | Yes |
| Interior Wood Finish | Yes |
| Basic Warranty (MO) | 12 |
| Structure Warranty (MO/MI) | 36 |
| Spec | 0 |
| Type | Toy Hauler |
| Solar Battery Charger | Yes |
| Water Heater Tank | No |
| Shower | Center |
| Toilet | Center |
| Heater | 35,000 BTUs |
| Air Conditioning | 30,000 BTUs |
| Speakers | Interior / Exterior |
| Height Closed (IN) | 13.42 ft. (161 in.) |
| Dry Weight (LBS) | 12950 LBS |
| Hot Deals |
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