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• 2021 MOMENTUM M-CLASS 398MR

The Grand Design Momentum M-Class 398M is a fifth-wheel toy hauler RV featuring an 18-foot garage, dual-entry, a loft area, and a residential-style kitchen. It is designed for carrying powersports toys, with a rear patio, fuel station, and high-capacity ramp door, and includes amenities like a fireplace, a four-seat sofa, and a residential refrigerator. It has a length of approximately 43 feet 11 inches and a maximum weight of 20,000 pounds.
Key features
Garage: An 18-foot garage with dual bunks that convert to couches and optional half bath.
Entry: Dual entry with one door leading to the main living area and another to the garage.
Kitchen: Features a kitchen island with stools, a farmhouse sink, and a residential refrigerator.
Living: Includes a four-seat sofa, a fireplace, and a large screen TV with an outdoor TV option.
Exterior: Equipped with an onboard fuel station, a high-capacity rear ramp door, two awnings, and a six-point hydraulic leveling system.
Specifications
Length: Approximately 43' 11"
Max Weight: 20,000 lbs
Sleeps: Up to 11 people
Fresh Water Capacity: 155 gallons
Garage: 18-foot garage space
Standard Equipment: Includes 5,500 Onan generator and a solar charge controller.
Benefits
Capacity: Can hold a wide range of toys due to its large garage and high payload capacity.
Livability: Features residential-style amenities to make extended trips comfortable.
Versatility: The M-Class line offers a balance of luxury and the ruggedness needed for toy hauling