Skip to main content

Grand Design Momentum Toy Hauler Fifth Wheel RVs For Sale

Previous
Next
1 of 14

The Grand Design Momentum fifth wheel toy haulers combine absolute luxury with a mobile garage giving you an extraordinary living space while you play hard at your favorite off-road destinations! 

 

Each is built on a drop-frame chassis with MORryde CRE3000 suspension system and a rubber pin box providing smoother towing, improved towability and better protection from damaging rock shock. The full enclosed fuel pump station provides gas fills and a pump timer, and the Weather-Tec package provides four seasons of traveling. The Luxury Interior package comes with a chef-inspired range and oven, recessed LED puck lighting, plus an LED TV in the living room to keep you entertained on rainy days. 

 

It's time for extreme adventure and luxurious accommodations, so choose a Momentum fifth wheel toy hauler by Grand Design today!

  • Momentum 399TH

    Momentum 399TH Floorplan Image

    Take a Virtual Tour

    Grand Design Momentum fifth wheel toy hauler 399TH highlights: Fold-Down Side ... more about Momentum 399TH

    Specifications

    Sleeps 5
    Slides 3
    Length 43 ft 1 in
    Ext Width 8 ft 5 in
    Ext Height 13 ft 6 in
    Int Height 8 ft 5 in
    Exterior Color Onyx, Onyx w/; Blue, Red, Orange. Sterling, Sterling w/; Blue, Red, Orange, Red, whit, and Blue
    Hitch Weight 3400 lbs
    GVWR 22500 lbs
    Dry Weight 15900 lbs
    Fresh Water Capacity 140 gals
    Grey Water Capacity 104 gals
    Black Water Capacity 104 gals
    Tire Size 17.5"
    Furnace BTU 40000 btu
    Fuel Capacity 60 gals
    Available Beds Queen
    Refrigerator Type 12V Stainless Steel
    Refrigerator Size 20 cu ft
    Cooktop Burners 3
    Shower Size 48" x 30"
    Number of Awnings 2
    Axle Weight 7000 lbs
    Garage Size 13 ft
    LP Tank Capacity 30 lbs
    Water Heater Type On Demand
    AC BTU 30000 btu
    TV Info LR 49" LED TV, BR LED TV, Garage 32" LED TV
    Awning Info 10' and 17' Power w/LED Lights
    Axle Count 3
    Washer/Dryer Available Yes
    Number of LP Tanks 2
    Shower Type Shower w/Seat
    Electrical Service 50 amp

    Similar Floorplans

  • Momentum 376THS

    Momentum 376THS Floorplan Image

    Take a Virtual Tour

    Grand Design Momentum fifth wheel toy hauler 376THS highlights: Below-Floor ... more about Momentum 376THS

    Have a question about this floorplan? Contact Us

    Specifications

    Sleeps 6
    Slides 5
    Length 41 ft 1 in
    Ext Width 8 ft 1 in
    Ext Height 13 ft 5 in
    Exterior Color Black w/; Charcoal, Silver, Blue, Burgundy, Burnt Orange. Silver w/; White, Mint, Charcoal. 10th Anniversary
    Hitch Weight 3250 lbs
    GVWR 20000 lbs
    Dry Weight 15900 lbs
    Fresh Water Capacity 110 gals
    Grey Water Capacity 104 gals
    Black Water Capacity 52 gals
    Tire Size 17.5"
    Furnace BTU 40000 btu
    Fuel Capacity 30 gals
    Available Beds Queen
    Refrigerator Type 12V Stainless Steel
    Refrigerator Size 20 cu ft
    Cooktop Burners 3
    Number of Awnings 2
    Axle Weight 7000 lbs
    LP Tank Capacity 60 lbs
    Water Heater Type On Demand
    AC BTU 30000 btu
    TV Info LR 49" LED TV, BR LED TV, Ext. LED TV
    Awning Info 10' and 18' Power w/LED Lights
    Axle Count 3
    Washer/Dryer Available Yes
    Shower Type Shower w/Seat
    Electrical Service 50 amp

    Similar Floorplans

  • Momentum 397THS

    Momentum 397THS Floorplan Image

    Take a Virtual Tour

    Grand Design Momentum fifth wheel toy hauler 397THS highlights: Dual Entry Two ... more about Momentum 397THS

    Have a question about this floorplan? Contact Us

    Specifications

    Sleeps 4
    Slides 3
    Length 44 ft 2 in
    Ext Width 8 ft 5 in
    Ext Height 13 ft 5 in
    Int Height 8 ft 5 in
    Exterior Color Onyx, Onyx w/; Blue, Red, Orange. Sterling, Sterling w/; Blue, Red, Orange, Red, whit, and Blue
    Hitch Weight 3375 lbs
    GVWR 20000 lbs
    Dry Weight 15600 lbs
    Fresh Water Capacity 140 gals
    Grey Water Capacity 104 gals
    Black Water Capacity 104 gals
    Tire Size 17.5"
    Furnace BTU 40000 btu
    Fuel Capacity 60 gals
    Available Beds Queen
    Refrigerator Type 12V Stainless Steel
    Refrigerator Size 20 cu ft
    Cooktop Burners 3
    Number of Awnings 3
    Axle Weight 7000 lbs
    Garage Size 13 ft 6 in
    LP Tank Capacity 30 lbs
    Water Heater Type On Demand
    AC BTU 30000 btu
    TV Info LR 49" LED TV, BR LED TV, Garage 32" LED TV
    Awning Info 14', 12' & 10' Power w/LED Lights
    Axle Count 3
    Washer/Dryer Available Yes
    Number of LP Tanks 2
    Shower Type Shower w/Seat
    Electrical Service 50 amp

    Similar Floorplans

  • Momentum 410TH

    Momentum 410TH Floorplan Image

    Take a Virtual Tour

    Grand Design Momentum fifth wheel toy hauler 410TH highlights: Front Private ... more about Momentum 410TH

    Have a question about this floorplan? Contact Us

    Specifications

    Sleeps 4
    Slides 3
    Length 44 ft 11 in
    Ext Width 8 ft 5 in
    Ext Height 13 ft 6 in
    Int Height 8 ft 5 in
    Exterior Color Onyx, Onyx w/; Blue, Red, Orange. Sterling, Sterling w/; Blue, Red, Orange, Red, whit, and Blue
    Hitch Weight 3600 lbs
    GVWR 22500 lbs
    Dry Weight 16800 lbs
    Fresh Water Capacity 140 gals
    Grey Water Capacity 104 gals
    Black Water Capacity 52 gals
    Tire Size 17.5"
    Furnace BTU 40000 btu
    Fuel Capacity 60 gals
    Available Beds Queen
    Refrigerator Type 12V Stainless Steel
    Refrigerator Size 20 cu ft
    Cooktop Burners 3
    Shower Size 48" x 30"
    Number of Awnings 3
    Axle Weight 7000 lbs
    Garage Size 13 ft 6 in
    LP Tank Capacity 30 lbs
    Water Heater Type On Demand
    AC BTU 30000 btu
    TV Info LR 49" LED TV, BR LED TV, Garage LED TV
    Awning Info 10', 12', 16' Power w/ LED Lights
    Axle Count 2
    Washer/Dryer Available Yes
    Number of LP Tanks 2
    Shower Type Shower w/Seat
    Electrical Service 50 amp

    Similar Floorplans

Momentum Features:

Standard Features (2025)

 

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)
  • MORryde Strut Assist 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
  • Tow Assist ABS & Sway Mitigation 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)
  • TravlFi On-Board WiFi Ready

Packages

Exterior Package 

  • Satellite TV Prep (All TV Locations)
  • MORryde Strut Assist Entry Step
  • Aluminum Quad Steps - Garage Entry (N/A 376THS)
  • 7,000 lb. Axles w/ ABS Drum Brakes
  • 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 376THS)
  • Full Paint Gel Coat Fiberglass Front Cap (376TH, 397TH, 399TH only)

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. 

Manu-Facts:

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!