- SALE PRICE: $99,995
- List: $117,995
- You Save: $18,000
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43ft long
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15,900 lbs
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Sleeps 3
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3 slides
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Kitchen IslandBath and a Half
399TH Floorplan
Specifications
| Sleeps | 3 | Slides | 3 |
| Length | 43 ft 1 in | Ext Height | 13 ft 5 in |
| Hitch Weight | 3400 lbs | GVWR | 20000 lbs |
| Dry Weight | 15900 lbs | Fresh Water Capacity | 140 gals |
| Grey Water Capacity | 104 gals | Black Water Capacity | 104 gals |
| Tire Size | 17" | Furnace BTU | 40000 btu |
| Fuel Capacity | 60 gals | Available Beds | Queen |
| Refrigerator Size | 18 cu ft | Cooktop Burners | 3 |
| Number of Awnings | 2 | Axle Weight | 7000 lbs |
| Garage Size | 13 ft | LP Tank Capacity | 60 lbs |
| Water Heater Capacity | 12 gal | Water Heater Type | Gas/Electric |
| TV Info | LR 49" LED TV, BR 32" LED TV, Garage 32" LED TV, Ext. LED TV | Awning Info | 14' & 16' Power w/LED Lights |
| Axle Count | 3 | Washer/Dryer Available | Yes |
| Shower Type | Sunken Tub/Shower | Electrical Service | 50 amp |
| VIN | 573FM4539N1122102 |
Description
- Fold-Down Side Patio
- 13' Garage
- Bath and a Half
- Dual Entry
- Island with Bar Stools
- 60 Gallon Fuel Tank
Experience luxury, power, and adventure all in one with this Used 2022 Grand Design Momentum 399TH, a top-tier fifth wheel toy hauler designed for RVers who want it all—space, comfort, and the ability to bring their toys along for the ride. Built with Grand Design’s renowned quality and attention to detail, the Momentum 399TH is perfect for extended stays, full-time RV living, or epic weekend getaways.
Luxury Meets Rugged Capability
The Grand Design Momentum 399TH stands out with its bold exterior and durable construction, built to handle long miles and rugged destinations. This luxury toy hauler offers an expansive garage that easily accommodates motorcycles, ATVs, or other adventure gear, while doubling as a versatile living or sleeping area when the toys are unloaded.
Inside, you’re welcomed by a spacious, residential-style interior featuring high-end finishes, modern décor, and smart floorplan design. The open-concept living area offers plush seating, a large entertainment center, and plenty of natural light, creating a comfortable space to relax after a day of adventure.
Designed for Comfort on the Road
The Momentum 399TH is packed with premium features that make every trip feel like home. The gourmet kitchen includes solid-surface countertops, ample cabinet storage, a residential refrigerator, and quality appliances that make cooking easy whether you’re boondocking or staying at a full-hookup campground.
The master suite offers a true retreat, complete with a comfortable bed, generous wardrobe storage, and a private bathroom designed with residential touches. Multiple sleeping areas ensure there’s room for family and friends, making this toy hauler ideal for group travel.
Built for Extended Adventures
With its robust insulation, climate control systems, and large holding tanks, this 2022 Grand Design Momentum 399TH is well-suited for extended stays and four-season travel. Whether you’re chasing warm weather, tailgating, or exploring off-the-grid destinations, this fifth wheel is engineered to keep you comfortable wherever the road takes you.
Why Buy a Used 2022 Grand Design Momentum 399TH?
Buying used allows you to enjoy premium luxury and performance at a more affordable price point. The 2022 Momentum 399TH delivers proven reliability, high-end craftsmanship, and features that continue to rival new models—making it a smart investment for adventurous RVers who want luxury without compromise.
Why Buy from Campers Inn RV?
When you purchase from Campers Inn RV, you’re not just buying an RV—you’re joining a family. As one of the nation’s most trusted RV dealerships, Campers Inn RV is committed to delivering exceptional customer service before, during, and long after the sale. Every used RV is carefully inspected to ensure quality and peace of mind.
Campers Inn RV also offers flexible financing options, knowledgeable RV professionals, and a nationwide support network, making ownership simple and stress-free. With decades of experience and a customer-first approach, Campers Inn RV helps you find the perfect RV to match your lifestyle and travel goals.
Start Your Next Adventure Today
If you’re looking for a luxury fifth wheel toy hauler that blends adventure-ready capability with residential comfort, the Used 2022 Grand Design Momentum 399TH is ready to deliver. Visit Campers Inn RV today and discover why this Momentum is the perfect partner for your next journey.
Features
Standard Features (2022)
Exterior
- Under Mount 17" Spare Tire
- 6-Point Hydraulic Leveling System
- MORryde® Pin Box
- Dual Pane Window Upgrade (Optional)
- Back-Up Camera (Camera Prep Standard) (Optional)
- Slide-Out Awning Toppers (Optional)
- Keyed Alike™ Ramp Door Latches
- 2nd Power Patio Awning w/ LED Lights
- 3rd Power Awning w/ LED Lights (Main Slide - 397TH) (Mandatory)
- Front and Back Under Unit Blue LED Light Kit (Mandatory)
- High-Gloss Gel Coat Exterior Sidewalls
- Full Paint Gel Coat Fiberglass Front Cap
- Full Body Paint (Optional)
- Door Side Exterior Spray Port
Construction
- Drop Frame Chassis (12" over 10")
- MORryde® CRE3000 Suspension System
- Upgraded Axle Hangers
Interior
- Interior Color Changing LED Accent Lighting
- Raised Panel Hardwood Cabinet Doors w/Hidden Hinges
- Sofa w/Headrest & Removable Swivel Tables (Includes Heat, Massage & LED Lighting Package)
- Central Vacuum System w/ Tools and Dust Pan
- Super Sofa Upgrade - IPO Theater Seats & Dinette (397TH, 399TH Only) (Optional)
- Plywood Drawer Bottoms
Kitchen
- Microwave
- 18 Cu. Ft. Refrigerator
- Residential Kitchen Faucet
- Window Behind Range (397TH, 399TH)
- Kitchen Barstools w/ Extended Countertops (397TH, 399TH only)
Bedroom
- Residential Style Headboard
- Under Bed Storage Area (N/A 376THS)
- Individually Switched Reading Lights Over Bed
- Bedside 110-Volt Outlets
- 60" X 80" Queen Memory Foam Mattress
- King Bed Upgrade (Optional)
Bathroom
- One-Piece Fiberglass Shower w/Glass Door
- Skylight Above Shower
- Porcelain Toilet
- Medicine Cabinet w/Mirrored Door
Audio & Video
- Rockford Fosgate Speaker Package w/12" Sub and 300W Amp (Optional)
- No-Crank Digital TV Antenna w/Booster
- Satellite/Solar Roof Access Channel
- 32" Class LED TV in Bedroom
- TV Prep in Garage (N/A 376THS)
- Exterior Entertainment Center w/LED TV (Mandatory)
HVAC & Plumbing
- 12v High Power Fan (Kitchen)
- 12v High Power Fan - Master Bath
- 12V Tank Heaters (All Tanks)
- 35k BTU High Capacity Furnace
- Fireplace w/ 5,000 BTU Electric Heater
- Middle/Main A/C
- 2nd A/C - Bedroom (Mandatory)
- Heat Pump A/C -Living Area (Optional)
Garage
- Rear Cargo Loading & Backup LED Lights
- Quick Set Ramp Door Patio System w/ Power Awning (N/A 376THS) (Optional)
- 3-Season Garage Wall (NA w/ Pull Down Garage Screen Wall) (N/A 376THS) (Optional)
- Happi-Jac Electric Bunk System w/Folding Sofas (N/A 376THS) (Optional)
- Patio Steps (N/A 376THS) (Optional)
Utilities
- OneControl™ 7" Touchscreen Control Panel w/App Controls and Redundant Slide Switches
- Generator Prep
- Solar Prep (10 gauge wiring with universal MC4 connectors)
- Solitude Solar System (300w Solar Panel, Controller, 2000w Inverter) (Optional)
Exterior Package - Mandatory
- 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)
- West Lake® E-Rated Tires w/NitroFill™
- 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
Garage package - Mandatory
- 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)
Interior Package - Mandatory
- 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)
Weather-Tek Package - Mandatory
- 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 Covid19 supply chain issues, some features and options shown may be temporarily substituted or removed.
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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.



