+73- SALE PRICE: $84,977
- List: $109,784
- You Save: $24,807
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40ft long
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14,700 lbs
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Sleeps 5
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3 slides
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Kitchen IslandBath and a Half
351MS Floorplan
Specifications
| Sleeps | 5 | Slides | 3 |
| Length | 40 ft 6 in | Ext Width | 8 ft 5 in |
| Ext Height | 13 ft 6 in | Int Height | 8 ft 5 in |
| Hitch Weight | 2785 lbs | GVWR | 19000 lbs |
| Dry Weight | 14700 lbs | Fresh Water Capacity | 140 gals |
| Grey Water Capacity | 52 gals | Black Water Capacity | 104 gals |
| Tire Size | ST215/75R17.5 LRH | Furnace BTU | 35000 btu |
| Fuel Capacity | 60 gals | Available Beds | Queen |
| Refrigerator Type | Stainless Steel | Refrigerator Size | 20 cu ft |
| Cooktop Burners | 3 | Number of Awnings | 2 |
| Axle Weight | 7000 lbs | Garage Size | 11 ft |
| LP Tank Capacity | 30 lbs | Water Heater Type | On Demand |
| AC BTU | 30000 btu | TV Info | LED TV; LR 49", Garage 32" |
| Awning Info | 10' and 18' Power with LED Lights | Axle Count | 2 |
| Washer/Dryer Available | Yes | Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat | Electrical Service | 50 amp |
| VIN | 573FM4124RBB01836 |
Description
Chase the thrill of the outdoors without leaving luxury behind in the Grand Design Momentum M-Class 351MS toy hauler—a fifth wheel built for those who live for adventure but demand comfort at every stop. From hauling your favorite toys to relaxing in a residential-style interior, this RV transforms every trip into the ultimate basecamp experience.
Highlights & Key Features
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Dedicated garage space that converts into a second living area, dining space, or guest bedroom
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Optional Happi-Jac rollover sofas, removable table, and top bunk for maximum versatility
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Bath and a half layout for added convenience—perfect for families and guests
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Dual entry doors for easy access to both living and garage areas
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Overhead loft bed providing extra sleeping space without sacrificing floorplan efficiency
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Four-seat super sofa slide for relaxing, entertaining, or movie nights
Living & Interior Comfort
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Spacious main living area with slide-outs creating an open, residential feel
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Fireplace and LED TV for cozy evenings after a day of adventure
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Premium seating designed for comfort whether you're relaxing or hosting guests
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Modern LED accent lighting that enhances the atmosphere inside
Kitchen Designed for the Journey
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Center kitchen island with bar stool seating—perfect for casual meals or gathering with friends
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Solid surface countertops for durability and style
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Professional-grade stainless steel cooktop for preparing meals with ease
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Ample storage and prep space for extended trips or full-time living
Private Bedroom Retreat
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Front master bedroom with queen bed slide and optional king upgrade
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Slide-top dresser and generous wardrobe storage
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Designed for comfort, privacy, and restful nights wherever you roam
Built for Adventure & Performance
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8'5" wide-body chassis with no wheel wells for maximum interior space and easier loading
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Dovetail rear entry for smoother loading and unloading of toys
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CRE3000 suspension system for a smoother, more stable towing experience
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Dual entry design built for function and convenience on the road
All-Season Capability
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Thermal roof design with triple insulation for year-round comfort
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Rail-Tite underbelly sealing for improved weather protection
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Stealth A/C system delivering powerful, whisper-quiet cooling
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Built to handle both hot summers and chilly off-season adventures
Why Buy This RV
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Perfect for outdoor enthusiasts who want to bring along ATVs, bikes, or gear
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Flexible garage space doubles as living or sleeping area
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Bath and a half layout adds comfort and convenience for groups
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High-end finishes paired with rugged capability
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Ideal for weekend warriors or full-time adventure seekers
Why Buy From Campers Inn RV Mocksville
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Family-owned dealership with decades of experience in the RV industry
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Knowledgeable team ready to match you with the right adventure-ready RV
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Transparent pricing with no hidden surprises
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Full-service dealership offering financing, parts, and service in one location
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Wide selection of RVs for easy comparison and confident buying decisions
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Continued support after the sale so your adventures never miss a beat
The Grand Design Momentum M-Class 351MS isn’t just a toy hauler—it’s your mobile adventure headquarters. Load up your gear, hit the road, and come home each night to comfort, style, and everything you need to do it all again tomorrow.
Features
Standard Features (2024)
Exterior
- Keyed Alike™ Ramp Door Latches
- 2nd Patio Awning w/ LED Lights
- 3rd Awning w/ LED Lights (Main Slide - 397THS & 410TH)
- Interior Color Changing LED Accent Lighting
- High-Gloss Gel Coat Exterior Sidewalls
- Door Side Exterior Spray Port
- Frameless Tinted Windows
- Walk-On Roof
- 17.5" Spare Tire (Undermount)
- Solid Step Quad Entry Step
- Slam-Latch Baggage Doors
- Mo-Secure
Construction
- 101" Wide Body Construction
- 5-Side Aluminum Cage Construction
- Fully Enclosed and Heated, Underbelly and Storage Area
Running Gear
- Upgraded Axle Hangers
- Heavy Duty H-Rated Tires
- Heavy Duty 7,000 lb. Axles with ABS Brakes
- 17.5" H-Rated Aluminum Wheels
- MORryde® CRE3000 Suspension System
- Anti-Lock Brake System
Frame & Chassis
- 6-Point Hydraulic Leveling System
- MORryde® Pin Box
- 101" Wide Body Super Chassis w/Drop-Frame Storage
Interior
- Interior Color Changing LED Accent Lighting
- Hardwood Cabinet Doors w/Hidden Hinges
- Sofa w/Headrest (Includes Heat, Massage & LED Lighting Package
- Central Vacuum System w/ Tools and Dust Pan
- Plywood Drawer Bottoms
Kitchen
- Microwave
- Residential Kitchen Faucet
- Professional Grade Stainless Steel Cooktop
- 12-Volt High Power MaxxAir w/Rain Sensor
- Window Behind Range
- Kitchen Barstools w/ Extended Countertops (397THS, 399TH, 410TH only)
- Smart Sink w/Removable Cutting Board, Produce Strainer and Glass Rinser
Electrical
- Solar Prep (10 gauge wiring with universal MC4 connectors)
- 75 Amp Converter
- 12V Battery Disconnect
HVAC
- 12V High Power Fan (Kitchen)
- 35k BTU High Capacity Furnace
- Fireplace w/ 5,000 BTU Electric Heater
- StealthAC Smart AC System
- Attic Vent
- High Capacity Heat Ducts
Plumbing
- Exterior Spray Port (Door Side)
- 12V Tank Heaters
- Sewer Hose Storage Area
- Whole House Water Filtration System
- All-In-One Enclosed and Heated Utility Center
Bedroom
- Under Bed Storage Area (N/A 376THS)
- Individually Switched Reading Lights Over Bed
- Bedside 110-Volt & USB Outlets
- Window Above Master Bed Headboard
- 60" X 80" Queen Bed Pillow Top Bed Mattress
Bathroom
- Skylight Above Shower
- Porcelain Toilet
- Medicine Cabinet w/Mirrored Door (N/A 410TH)
- Undermount Lav Sink
- One-Piece Fiberglass Shower w/Glass Door & Teak Bench Seat
Appliance
- Fireplace with Electric Heater
- Stainless Steel 20 Cu. Ft. Refrigerator
- 30" Over-The-Range Microwave
Electronics
- OneControl™ System
- Back-Up Camera Prep
- Exterior Cable/SAT Plug-In
- LED Smart TV in Living Area
- LED TV in Bedroom
- Rockford Fosgate Stereo Entertainment System w/HDMI and App Controls
- Exterior Speakers
- No-Crank Digital TV Antenna w/Booster
- LED TV in Garage (N/A 376THS)
Packages
Exterior Package
- Satellite TV Prep (All TV Locations)
- Aluminum Quad Entry Steps - Garage Entry (N/A 376THS)
- 7,000 lb. Axles w/Self Adjusting Brakes, Wet Bolts and Bronze Bushings
- 17” Aluminum Wheels (120PSI Rated)
- Cooper Tires 17.5" All-Steel H-Rated Tires
- Slam-Latch Baggage Doors
- Frameless Tinted Windows
- Aluminum Quad Entry Steps - Main Entry
- Exterior Security Lights
- Power Patio Awning w/LED Lighting
- Folding Roof Ladder
- White Gel Coat Fiberglass Front Cap
- 12V Battery Disconnect
- All-In-One Exterior Utility Center
- 50 Amp Service
- Converter
- Enclosed Fuel Station w/ Dual Fuel Tank (Single Tank 376THS)
- Full Paint Gel Coat Fiberglass Front Cap (376THS, 397TH, 399TH only)
- Solid Step Quad Entry Step - Main Entry
Luxury Interior Package
- 49" Class LED TV in Living Area
- Stereo Entertainment System w/Bluetooth and App Based Controls in Living Area
- Washer/Dryer Prep
- 12 Gallon Gas/Electric Water Heater
- Roller Shade Window Coverings (Main Living Area and Bedroom)
- Recessed LED Puck Lighting
- Solid Surface Countertops w/ Sink Covers
- Stainless Steel Undermount Kitchen Sink
- Chef Inspired Range & Oven w/ Cover
- Kitchen Pantry w/ LED Light Strip
- Garage Control Panel (N/A 376THS)
Garage package
- 32" Class LED TV in Garage (397TH and 399TH only)
- Protective Diamond Plate on Garage Sidewalls
- 2,500 lb. Rated Flush-Mount Tie-Downs
- Ram-Air Garage Vents Both Sides (N/A 376THS)
- Tuff-Ply Gas and Oil Resistant Garage Flooring
- Fast Ramp Rear Ramp Door (N/A 376THS)
- Triple Insulated Garage Floor (N/A 376THS)
Weather-Tek Package
- R-Value Equivalent (R-40 Roof / R-45 Floor / R-11 Sidewalls / R-40 Garage Floor / R-24 Slide room Floor)
- Fully Enclosed and Heated, Underbelly and Storage Area
- Enclosed and Heated Low Point Drains
- Engineered Underbelly Airflow Heat Paths
- Stealth AC System w/ Insulated A/C Ducts
- Attic Vent
- Plumbing Line Insulation Barrier
See us for a complete list of features and available options!
All standard features and specifications are subject to change.
All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.
Due to the current environment, our features and options are subject to change due to material availability.
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*All calculated monthly payments are an estimate for qualified buyers only and do not constitute a commitment that financing or a specific interest rate or term is available. Financing terms may not be available in all Campers Inn locations. Campers Inn RV Sales is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual inventory in stock on our lot. Please contact us for availability as our inventory changes rapidly.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.