Grand Design Momentum M-Class Toy Hauler Fifth Wheel


The Momentum M-Class toy hauler fifth wheels by Grand Design combine luxury with a garage allowing you to be mobile with your toys and comfortable anywhere you choose to explore!


Each is built on an exclusive SuperChassis with a 101" wide body and a wide rail design for maximum space, and the CRE3000 Suspension will provide smooth towing. You'll find Tuff-Ply gas and oil resistant garage flooring and 2,500 lb. flush-mount tie-downs to keep your gear secure. Luxury abounds inside with hardwood cabinet doors, solid surface countertops, and color changing LED accent lighting! Outside, you'll appreciate hassle-free features such as, a 6-point hydraulic leveling system, a door side exterior spray port, slam-latch baggage doors, and more!


Extreme R&R is found with the Momentum M-Class by Grand Design; choose yours today!

Showing 1 - 8 of 8
Favorites ()

Toy Hauler Fifth Wheel

  1. Front Living, Kitchen Island
    • Length: 39 ft 10 in
    • Weight: 14200 lbs
    • Slides: 5
    • Sleeps: 6

    4 Available Now!

  2. Bath and a Half, Loft
    • Length: 39 ft 11 in
    • Weight: 15138 lbs
    • Slides: 3
    • Sleeps: 5

    16 Available Now!

  3. Kitchen Island, Loft
    • Length: 38 ft 10 in
    • Weight: 14200 lbs
    • Slides: 3
    • Sleeps: 5

    14 Available Now!

  4. Kitchen Island, Bath and a Half
    • Length: 40 ft 6 in
    • Weight: 14700 lbs
    • Slides: 3
    • Sleeps: 5

    57 Available Now!

  5. Kitchen Island, Bath and a Half
    • Length: 43 ft 11 in
    • Weight: 15800 lbs
    • Slides: 3
    • Sleeps: 5

    35 Available Now!

  6. Loft, Two Entry/Exit Doors
    • Length: 44 ft 2 in
    • Weight: 15600 lbs
    • Slides: 3
    • Sleeps: 5

    114 Available Now!

  7. Kitchen Island, Loft
    • Length: 43 ft 10 in
    • Weight: 15000 lbs
    • Slides: 3
    • Sleeps: 8

    26 Available Now!

  8. Bath and a Half, Loft
    • Length: 46 ft 4 in
    • Weight: 16800 lbs
    • Slides: 3
    • Sleeps: 6

    50 Available Now!

Showing 1 - 8 of 8

Enter your location to find RVs nearest you

Momentum M-Class Features:

Standard Features



  • Keyed Alike™ Ramp Door Latches
  • 2nd Patio Awning w/ LED Lights
  • 3rd Awning w/LED Lights (Main Slide-395MS)
  • Exterior 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)
  • MORryde Strut Assist Entry Step
  • Slam-Latch Baggage Doors
  • Mo Secure


  • 101" Wide-Body Construction
  • 5-Side Aluminum Cage Construction
  • Fully Enclosed Underbelly w/Heated Tanks and Storage

Running Gear

  • Upgraded Axle Hangers
  • Heavy Duty H-Rated Tires
  • Heavy Duty 7,000lb. Axles with ABS Drum Brakes (381MS, 395MS, 398M)
  • Heavy Duty 8,000lbs. Axles with ABS Drum Brakes (349M, 351MS)
  • 17.5" H-Rated Aluminum Wheels
  • MORryde® CRE3000 Suspension System
  • Anti-Lock Brake System

Frame & Chassis

  • 6-Point Hydraulic Leveling System
  • 101" Wide Body Super Chassis


  • 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


  • Microwave
  • Residential Kitchen Faucet
  • Professional Grade Stainless Steel Cooktop
  • 12v High Power MaxxAir Fan with Rain Sensor
  • Window Behind Range (349M, 351MS, 381MS, 398M)
  • Kitchen Barstools w/Extended Countertops (349M, 351MS, 381MS, 398M)
  • Smart Sink w/removable cutting board, produce strainer and glass rinser


  • Solar Prep (10 gauge wiring with universal MC4 connectors)
  • 75 Amp Converter
  • 12V Battery Disconnect


  • 12v High Power Fan (Kitchen)
  • 35K BTU High Capacity Furnace
  • Stealth AC System w/ Insulated A/C Ducts
  • Attic Vent
  • High Capacity Heat Ducts


  • Exterior Spray Port (Door Side)
  • 12V Tank Heaters
  • Sewer House Storage Area
  • Whole House Water Filtration System
  • All-In-One Enclosed Utility Center


  • Under Bed Storage Area (N/A 336M)
  • Individually Switched Reading Lights Over Bed
  • Bedside 110-Volt & USB Outlets
  • Window Above Master Bed Headboard
  • 60" x 80" Queen Pillow Top Bed Mattress


  • Porcelain Toilet
  • Medicine Cabinet w/Mirrored Door
  • Undermount Lav Sink
  • One-Piece Fiberglass Shower w/Glass Door & Teak Bench Seat


  • Fireplace with Electric Heater
  • Stainless Steel 20 cu. ft. Refrigerator
  • 30" Over-The-Range Microwave


  • Exterior Cable/SAT Plug-In
  • LED Smart TV in Living Area
  • Rockford Fosgate Stereo Ent. System w/HDMI and App Controls
  • Exterior Speakers
  • No-Crank Digital TV Antenna w/Booster
  • LED TV in Garage (NA 336M)
  • TravLFi On-Board WiFi Ready


Exterior Package

  • Satellite TV Prep
  • MORryde Strut Assist Entry Step
  • Aluminum Quad Entry Steps - Garage Entry (N/A 336M)
  • 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
  • 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 336M)
  • Partial Paint Gel Coat Fiberglass Front Cap

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 336M)

Garage Package

  • 32" Class LED TV in Garage 
  • Protective Diamond Plate on Garage Sidewalls
  • 2,500 lb. Rated Flush-Mount Tie-Downs
  • Ram-Air Garage Vents Both Sides(N/A 336M)
  • Tuff-Ply Gas and Oil Resistant Garage Flooring
  • FastRamp Rear Ramp Door(N/A 336M)
  • Triple Insulated Garage Floor (N/A 336M)

Weather-Tek Package

  • R-Value Equivalent (R-40 Roof / R-45 Floor / R-11 Sidewalls / R-40 Garage Floor / R-24 Slideroom 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.


Grand Design Logo
In 2012, we started with a blank canvas to pursue that better way, a different way, than what had been done before. A company whose culture requires a long-term, personal connection with our customers, employees, and dealers – that company is Grand Design RV. Our business model of doing the right thing has led us to unparalleled years of growth.
Our local workforce has been hand-picked and has an excellent reputation for second-to-none industry craftsmanship, and our CEO and Senior Management actively work with the production facilities to help build the team and develop products.
At Grand Design we've raised the quality bar by putting every unit through a series of quality inspection gates during the manufacturing process. Once completed, the unit undergoes a comprehensive “final finish” inspection. Every one of our coaches is shipped to a PDI (Pre-Delivery Inspection) area where they are put through a rigorous 300+ point inspection checklist before being shipped to our dealers.  And, we back every one of our coaches with a 3-year limited structural warranty.  
At Grand Design our goal is simple – continue leading the industry with quality products while improving the customer’s RV experience before, during and after the sale. We strive for nothing less than customers for life and we would be honored to personally welcome you to the Grand Design RV family!