{"@context":"https://schema.org","@type":"Product","name":"4 Grand Design Momentum M-Class RVs for sale in California","offers":{"@type":"AggregateOffer","offerCount":4,"lowPrice":"139995.00","highPrice":"169995.00","priceCurrency":"USD","offers":[{"@type":"Offer","url":"https://www.rvt.com/buy/details/2026-grand-design-momentum-m-class-399m/ecf903d9-9d3c-11f0-beaa-02c8259c7411/","itemOffered":{"@type":"Thing","name":"2026 GRAND DESIGN MOMENTUM M-CLASS 399M","description":"2026 Grand Design Momentum 399M, 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 has all the comfort and convenience you could ask for! Once you have unloaded your toys from the 12' 6\" separate garage, you can start lunch on the exterior griddle located by the side patio. There is also a 65\" TV here and a 1.7 cu. ft. refrigerator to entertain guests! And if you have guests staying over, you can choose to add the optional Liftsuite system with underside can lights in the garage. If the weather isn't cooperating, you can make meals in the fully equipped interior kitchen, complete with an island, pantry, pull-out countertop extension and more. An L-shaped sofa with recliners is in perfect view of the 50\" TV and fireplace, and there is even a hybrid desk/dinette with windows where you can get some work done if needed. Head towards the front to freshen up in the full bath before heading to bed in the private bedroom. Here, you'll find a queen bed slide out with an optional king bed, a large closet with washer and dryer prep, plus a dresser with TV prep if you want the option to watch movies in bed!

The Momentum fifth wheel toy haulers by Grand Design are built for four seasons of travel with your off-road toys and include luxurious accommodations throughout for extreme living! Each is constructed to a superior standard with the fully enclosed and heated underbelly and storage area, the 5-sided aluminum cage, and the triple insulated garage floor. The MORryde CRE3000 suspension system and rubber pin box, plus the upgraded axle hangers provide the performance and smooth towing you desire, while the interior offers luxury such as color changing LED accent lighting, hardwood cabinet doors with hidden hinges, and a central vacuum system. Each toy hauler also includes four packages, including the Garage Package with Tuff-Ply gas and oil-resistant flooring, the Weather-Tek Package with a Stealth AC System, and the Interior Luxury Package with solid surface countertops!

Front Private Bedroom
Kitchen Island
Hybrid Desk/Dinette
Unobstructed Pass-Thru Storage
Side Patio

20 CU FT 12V REFRIGERATOR; 3RD A/C; 3RD A/C PREP; 6K WATT GENERATOR; AUXILIARY FRESH WATER TANK; BEDROOM A/C; EXTERIOR PKG; GARAGE LED HD TV; GARAGE PKG; GARAGE SUITE; GEN III 3 SEASON DOOR; HEAT PUMP A/C; KING BED UPGRADE; KITCHEN POWER FAN; LUXURY INTERIOR PKG; MORRYDE 7K INDEPENDENT SUSPENSION; OMNICONNECT; PATIO CHAIRS; REAR ALUMINIUM DECK SYS; ROCKFORD FOSGATE STAGE 1; RVIA SEAL; SAFERIDE; SOLAR½ PKG; UNDER UNIT LED LIGHT KIT; UPGRADED H-RATED TIRES; WEATHER-TEK INSULATION PKG","itemCondition":"Used","priceCurrency":"USD","price":"149995.00"}},{"@type":"Offer","url":"https://www.rvt.com/buy/details/2026-grand-design-momentum-m-class-399m/1d02dbda-6fca-11f1-adcf-02f5bff6b341/","itemOffered":{"@type":"Thing","name":"2026 GRAND DESIGN MOMENTUM M-CLASS 399M","description":"2026 Grand Design Momentum M-Class 399M, Overview Venture into Luxury with the 2026 Grand Design Momentum M-Class 399M: Your Home on the Open Road!

Welcome to a new era of travel with the 2026 Grand Design Momentum M-Class 399M, where elegance and exploration converge. This FIFTH WHEEL HAULER RV isn't just a vehicle; it's a mobile haven for those who crave adventure without sacrificing the comforts of home.

Sleek and Sturdy Design:
The 2026 Grand Design Momentum M-Class 399M stands out with its sophisticated and functional design. Its sleek lines promise smooth travel, while the high-quality materials ensure durability and a touch of luxury that lasts.

Expansive and Inviting Interiors:
Step into the spacious interior of the Grand Design Momentum, where every detail caters to your comfort and convenience. The layout maximizes space and functionality, offering a perfect setting for relaxation and entertainment.

Supreme Comfort for the Road:
In the Grand Design Momentum, comfort is king. The plush seating, cozy sleeping spaces, and versatile living areas are all designed to make your journeys as relaxing as they are memorable.

Safety at the Forefront:
Safety is a top priority in the Grand Design Momentum. Equipped with state-of-the-art safety features, this RV ensures peace of mind as you traverse various landscapes.

Environmentally Considerate Travel:
With the 2026 Grand Design Momentum M-Class 399M, travel responsibly. Incorporating eco-friendly features, this RV allows you to enjoy the luxuries of travel while being mindful of the environment.

Why the 2026 Grand Design Momentum M-Class 399M?
Opting for the Grand Design Momentum is a declaration of your love for refined travel and meaningful experiences. Whether it s for leisurely retreats or adventurous expeditions, this RV elevates every journey into an extraordinary experience.

Take the leap into a world of refined exploration with the 2026 Grand Design Momentum M-Class 399M. Your luxurious home away from home awaits, ready to turn every road into a story of adventure and elegance! Interior Interior Features: This RV's interior is designed for comfort, convenience, and a touch of luxury on every journey. Exterior Exterior Features: Built for adventure, comfort, and lasting memories, this RV stands as a pinnacle of modern design and functionality.","itemCondition":"Used","priceCurrency":"USD","price":"169995.00"}},{"@type":"Offer","url":"https://www.rvt.com/buy/details/2026-grand-design-momentum-m-class-399m/52259afd-a2da-11f0-beaa-02c8259c7411/","itemOffered":{"@type":"Thing","name":"2026 GRAND DESIGN MOMENTUM M-CLASS 399M","description":"2026 Grand Design Momentum 399M, Grand Design Momentum fifth wheel toy hauler 399M highlights:

Front Private Bedroom
Kitchen Island
Hybrid Desk/Dinette
Unobstructed Pass-Thru Storage
Side Patio

","itemCondition":"Used","priceCurrency":"USD","price":"139995.00"}}]}}