2025 Grand Design Momentum M-Class 344M

2025 Grand Design Momentum M-Class 344M

The Momentum Fifth Wheel Toy Hauler is the point where absolute luxury meets mobile garage! We have completely raised the Toy Hauler bar by incorporating an elegant Living Area, with more seating room, a fully functional Kitchen, while still keeping the Master Suite (with a large wardrobe slide) into this unit!  Check out our Floorplan Fly-Through Videos and get a feel for the extraordinary space we’ve created. We know you will agree with us when we say that “The Momentum RV is the place to live well and play hard!”.

Our new Momentum M-CLASS Fifth Wheel Toy Haulers are lighter but are no lightweights when it comes to features. Inside and out, the Grand Design M-CLASS series has redefined the look and feel of the toy hauler. When it comes to elegant design and amenities, one word encapsulates it… “CLASS”.

This 344M is an even better version of the standard Grand Design product we have all come to love.  For sale at Good Life RV in Des Moines, Iowa. 515-462-9800!

Options Included

  • 20 Cu. Ft. 12V Refrigerator (+ Inverter Prep, 330W Solar Panel, 50 Amp Controller, Bluetooth Module and Two (2) Dock Ports)
  • 3rd A/C
  • 3rd A/C Prep
  • 8K Axle w/ABS Drum Brakes
  • Auxiliary Fresh Water Tank
  • Bedroom A/C
  • Exterior Entertainment Center
  • Garage LED HD TV
  • Gen II 3 Season Door with Sliding Windows
  • Happi-Jac Electric Bunk System w/Folding Sofas
  • Heat Pump A/C
  • Kitchen Power Fan w/Rain Sensor
  • M-Class Exterior Package
  • M-Class Garage Package
  • M-Class Luxury Interior Package
  • M-Class Weather-Tek Insulation Package
  • Momentum Patio Chairs
  • Rear Aluminum Deck System w/Rear Power Awning
  • Rockford Fosgate Stage 1 Stereo - 500 Watts, Int/Ext Speakers w/10" Powered Sub
  • RVIA Seal
  • SafeRide 24/7 Unlimited Roadside Assistance - 1 Year (Mandatory)
  • Solar + Package (One Additional 330W Panel & 2000W Inverter)
  • TravlFi On-Board WiFi Ready
  • Under Unit LED Light Kit
  • Upgraded Cooper H-Rated tires w/17.5" Wheels (Triple Axle)
  • Yamaha - 6kw Gasoline Generator
MSRP
$152,472
$1,580 / month
Estimated payment for 96 month loan, 4% APR, $22,871 down.

2025 Grand Design Momentum M-Class 344M

The Momentum Fifth Wheel Toy Hauler is the point where absolute luxury meets mobile garage! We have completely raised the Toy Hauler bar by incorporating an elegant Living Area, with more seating room, a fully functional Kitchen, while still keeping the Master Suite (with a large wardrobe slide) into this unit!  Check out our Floorplan Fly-Through Videos and get a feel for the extraordinary space we’ve created. We know you will agree with us when we say that “The Momentum RV is the place to live well and play hard!”.

Our new Momentum M-CLASS Fifth Wheel Toy Haulers are lighter but are no lightweights when it comes to features. Inside and out, the Grand Design M-CLASS series has redefined the look and feel of the toy hauler. When it comes to elegant design and amenities, one word encapsulates it… “CLASS”.

This 344M is an even better version of the standard Grand Design product we have all come to love.  For sale at Good Life RV in Des Moines, Iowa. 515-462-9800!

Options Included

  • 20 Cu. Ft. 12V Refrigerator (+ Inverter Prep, 330W Solar Panel, 50 Amp Controller, Bluetooth Module and Two (2) Dock Ports)
  • 3rd A/C
  • 3rd A/C Prep
  • 8K Axle w/ABS Drum Brakes
  • Auxiliary Fresh Water Tank
  • Bedroom A/C
  • Exterior Entertainment Center
  • Garage LED HD TV
  • Gen II 3 Season Door with Sliding Windows
  • Happi-Jac Electric Bunk System w/Folding Sofas
  • Heat Pump A/C
  • Kitchen Power Fan w/Rain Sensor
  • M-Class Exterior Package
  • M-Class Garage Package
  • M-Class Luxury Interior Package
  • M-Class Weather-Tek Insulation Package
  • Momentum Patio Chairs
  • Rear Aluminum Deck System w/Rear Power Awning
  • Rockford Fosgate Stage 1 Stereo - 500 Watts, Int/Ext Speakers w/10" Powered Sub
  • RVIA Seal
  • SafeRide 24/7 Unlimited Roadside Assistance - 1 Year (Mandatory)
  • Solar + Package (One Additional 330W Panel & 2000W Inverter)
  • TravlFi On-Board WiFi Ready
  • Under Unit LED Light Kit
  • Upgraded Cooper H-Rated tires w/17.5" Wheels (Triple Axle)
  • Yamaha - 6kw Gasoline Generator
Stock # PB03035
Location Des Moines
Year 2025
Make Grand Design
Model Momentum M-Class
Trim 344M
Condition New

Specifications

Secondary Class Toy Hauler
Dry Weight (LBS) 15138 LBS
Hitch Weight (LBS) 3734 LBS
Max Sleeping Count 6
Category Class Fifth Wheel
Interior Color Magnolia
VIN 573FM4227SBB03035
Length (FT/IN) 40'
Gross Weight Rating (LB/KG) 19000 LBS
Total Fresh Water Tank Capacity (GAL/L) 140
Total Gray Water Tank Capacity (GAL/L) 104
Total Black Water Tank Capacity (GAL/L) 52
Number Of Slideouts 3
General
Ride Digital