View Details
The 2026 Grand Design Momentum G-Class 394G is a flagship fifth wheel toy hauler designed for maximum space, cargo capacity, and residential comfort. At nearly 45 feet long with a wide-body chassis and triple slide-outs, it delivers one of the largest interiors in the G-Class lineup while maintaining a functional, adventure-ready design.
The 15-foot separate garage is built to handle large toys such as side-by-sides, motorcycles, or multiple ATVs. Once unloaded, the space converts into a flexible living area with a Happi-Jac bed system, seating, loft, and a convenient half bath. The rear ramp door transforms into a patio, expanding outdoor living space and usability at camp.
Inside, three slide-outs create a wide, open main living area featuring an L-shaped sofa, theater seating, fireplace, and entertainment center. The kitchen includes a residential 15 cu. ft. refrigerator, three-burner range with oven, microwave, and solid-surface countertops, supporting full meal prep for extended trips.
The front private bedroom provides a queen bed with wardrobe storage and washer/dryer prep, while the main bathroom features a large walk-in shower. The bath-and-a-half layout improves convenience for families and guests, especially when using the garage and patio areas.
Built for long-term travel, the 394G includes oversized holding tanks, a 30-gallon fuel station, and solar prep for off-grid capability. The heated and enclosed underbelly with high insulation ratings (R-40 roof/floor) supports four-season camping, while the 35,000 BTU furnace and multiple A/C options maintain comfort in varying climates.
Heavy-duty construction includes a triple-axle setup, aluminum cage frame, and high-capacity suspension, delivering stability and durability for hauling and long-distance towing.
Reasons to Buy the Momentum G-Class 394G:
One of the largest G-Class toy haulers with maximum interior space
15’ garage with patio, loft, and half bath for versatility
Sleeps up to 7 with multiple dedicated sleeping areas
High-capacity tanks and fuel station for extended trips
Four-season construction with upgraded insulation
Why Buy from Lazydays RV powered by Campers Inn RV:
Competitive pricing on new Grand Design fifth wheel toy haulers
Large inventory including flagship Momentum models
Experienced RV specialists for toy hauler and full-time setups
Flexible financing options for qualified buyers
Full-service dealership for parts, maintenance, and upgrades
Nationwide support network for continued ownership
The 2026 Grand Design Momentum G-Class 394G delivers maximum garage space, luxury residential features, and extended-stay capability, making it an ideal choice for buyers who want a top-tier toy hauler built for both adventure and full-time comfort.