+78 
- SALE PRICE: $124,998
- MSRP: $170,964
- You Save: $45,966
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Sleeps 5
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3 Slides
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Kitchen IslandBath and a Half
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43ft Long
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15,900 lbs
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SILVER MAPLE
399TH Floorplan
Specifications
| Sleeps | 5 | Slides | 3 |
| Length | 43 ft 1 in | Ext Width | 8 ft |
| Ext Height | 13 ft 5 in | Interior Color | SILVER MAPLE |
| Hitch Weight | 3400 lbs | GVWR | 20000 lbs |
| Dry Weight | 15900 lbs | Fresh Water Capacity | 155 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 | 2 |
| Axle Weight | 7000 lbs | Garage Size | 13 ft |
| LP Tank Capacity | 30 lbs | AC BTU | 30000 btu |
| TV Info | LR 49" LED TV, BR LED TV, Garage 32" LED TV, Ext. LED TV | Awning Info | 14' & 16' Power w/LED Lights |
| Axle Count | 3 | Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 | Shower Type | Sunken Tub/Shower |
| Electrical Service | 50 amp | VIN | 573FM4532RBB01983 |
Description
Grand Design Momentum Fifth Wheel Toy Hauler 399TH Highlights:
- Fold-Down Side Patio
- 13' Garage with Dual Entry
- Bath and a Half
- Island with Bar Stools
- 60-Gallon Fuel Tank
Get ready to elevate your adventure with the Grand Design Momentum 399TH Fifth Wheel Toy Hauler! Whether you're heading to an off-road park, a special event, or on a long road trip, this toy hauler has everything you need to make your experience unforgettable.
The 13' garage is designed for your toys with features like a Fast Ramp rear ramp door, 2,500 lb. rated flush-mount tie-downs, and protective diamond plate on the sidewalls. Plus, the Ram-Air garage vents on both sides provide optimal airflow. This versatile space can transform into an additional bedroom or living area with the optional Happi-Jac rollover sofas/table with top bed, plus you’ll have your very own half bath, LED TV, and ample storage for all your gear.
Inside, the spacious living and kitchen area welcomes you with dual slides, a center island with bar stools, a free-standing table, and luxurious theatre seating (or choose the super sofa option). With everything you need to make meals for the crew, you’ll enjoy all the comforts of home while on the go.
The fold-down side patio adds even more outdoor living space, complete with an LED TV, storage, and an elevated area for relaxation above ground.
Built for All Seasons, All Adventures
The Momentum 399TH is built to handle extreme weather conditions and outdoor adventures year-round. Featuring a thermal roof design, full-laminated walls, and a triple-insulated garage floor, this toy hauler ensures maximum durability and comfort, no matter the season.
The MORryde CRE3000 suspension system, upgraded axle hangers, and rubber pin box provide a smooth towing experience, while the interior is designed with luxury in mind. Enjoy color-changing LED accent lighting, raised panel hardwood cabinet doors with hidden hinges, and a central vacuum system to make cleanup a breeze.
Customize your toy hauler with four fantastic packages:
- Garage Package: Featuring Tuff-Ply gas and oil-resistant flooring.
- Weather-Tek Package: Equipped with a Stealth AC System for all-weather camping.
- Interior Luxury Package: Solid surface countertops throughout.
- Tech Package: Offering high-tech features for the ultimate convenience.
With the 60-gallon fuel tank and ample storage space, the Grand Design Momentum 399TH is designed to take you on your next adventure with ease and comfort.
Get Ready to Explore in Style—Choose the Momentum 399TH Toy Hauler Today!
- MOMENTUM INTERIOR PACKAGE
- EXTERIOR PACKAGE
- GARAGE PACKAGE
- WEATHER-TEK INSULATION PACKAGE
- UNDER-UNIT LED LIGHT KIT
- BEDROOM A/C
- UPGRADED COOPER H-RATED TIRES
- EXTERIOR ENTERTAINMENT CENTER
- 3RD A/C PREP
- AUX. FRESH WATER TANK
- 20CU FT. 12V FRIDGE (+ INVERTER PREP, 330W SOLAR PANEL, 50 AMP CONTROLLER, BLUETOOTH MODULE, AND 2 DOCK PORTS)
- TRAVLFI ON-BOARD WIFI READY
- SAFERIDE RV ROADSIDE ASSISTANCE
- KING BED UPGRADE
- YAMAHA 6kw GAS GENERATOR
- GEN2 3-SEASON DOOR WITH SLIDING WINDOWS
- 3RD A/C
- HEAT PUMP A/C
- HAPPI-JAC ELECTRIC BUNK SYSTEM W/FOLDING SOFAS
- REAR ALUMINUM DECK SYSTEM W/REAR POWER AWNING
- MOMENTUM PATIO CHAIRS
- SOLAR+ PACKAGE
- 7K AXLE W/ABS BRAKES (TRIPLE AXLE)
- WINTERIZATION
- CDL FEE
- RVIA SEAL
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.