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Key Features of the Pre-Owned Grand Design Momentum M-Class 351M
11' separate garage with ramp door for toys or gear
Triple slide-outs for expanded living space
Bath-and-a-half floorplan for added convenience
Private front bedroom with queen bed and wardrobe storage
Loft sleeping area plus convertible garage space
Residential kitchen with large refrigerator and solid-surface countertops
Dual power awnings with LED lighting
60-gallon fuel station for toys
Generator prep or onboard generator
Heated and enclosed underbelly for extended-season camping
The Grand Design Momentum M-Class 351M is a high-end toy hauler fifth wheel built for travelers who want to bring their adventures with them—without sacrificing comfort. With a spacious layout, dedicated garage, and residential-style living area, this RV is perfect for weekend warriors, motorsports enthusiasts, or full-time travelers.
At nearly 39 feet long with three slide-outs, the 351M delivers a wide-open interior while still maintaining strong towability for a properly equipped truck.
The 11-foot garage is the heart of this toy hauler, offering space for ATVs, motorcycles, bikes, or gear. When unloaded, it easily converts into additional living or sleeping space with seating and overhead storage—making it incredibly versatile for guests or family.
A convenient half bath in the garage area adds functionality, especially when traveling with multiple people.
Up front, the main living area features theater seating, entertainment space, and a fully equipped kitchen with residential appliances and plenty of storage. The private master bedroom offers a quiet retreat with a queen bed and wardrobe space, while the loft and garage sleeping options increase total capacity.
This Momentum is designed for serious travel, with features like a fuel station for your toys, large holding tanks, and a durable construction with insulated garage flooring.
Whether you're heading to the dunes, mountains, or campground, this toy hauler is ready to go.
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*90 Days – Payments can be deferred for 90 days with approved credit. Interest accrues from contract date. Financing terms subject to lender approval. Not valid with other offers. Actual products, programs and services may differ materially from those on this site. Lazydays is not responsible for errors made in stated pricing. Specifications and availability subject to change without notice. Document fees vary by location. See dealership for complete details.
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***Margaritaville offer valid for a limited time only at Lazydays RV of Tampa. Customers who purchase a new RV or complete a qualified service appointment (appointment must be booked and customer must show for the appointment) are eligible to receive a complimentary 3-day, 2-night stay at Camp Margaritaville RV Resort of Auburndale. Offer valid while supplies last. Promotion is non-transferable, has no cash value, and cannot be combined with other offers or promotions. Limit one promotional stay per customer, per transaction. Resort stay subject to availability and blackout dates may apply. Resort reservation must be made within 30 days of RV purchase or completed service appointment. Valid for Florida residents and legal U.S. residents only, 18 years or older. Additional terms and conditions may apply. Lazydays RV of Tampa reserves the right to modify or cancel this promotion at any time without notice. Void where prohibited by law.
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