As the COVID-19 (Coronavirus) continues to evolve, we are committed to following the CDC’s guidelines.

For More Info Click Here

Skip to main content

New 2022 Grand Design Momentum 399TH

Virtual Tour
2022 399TH Features and Options
Grand Design Momentum toy hauler 399TH highlights:
  • Fold-Down Side Patio
  • 13' Garage
  • Bath and a Half
  • Dual Entry
  • Island with Bar Stools
  • 60 Gallon Fuel Tank

 

Get ready for a lot of fun when you head out to the off-road park, a special event, or a long trip with your toys! You will love the garage with the Fast Ramp rear ramp door, the Ram-Air garage vents on both sides, the 2,500 lb. rated flush-mount tie-downs and the protective diamond plate on the garage sidewalls. This area can become a bedroom or an extra living area if you want to add Happi-Jac rollover sofas/table with top bed option, plus you will already have a half bath for convenience, an LED TV and storage for your gear. The living and kitchen area is spacious with dual slides and a kitchen island with bar stools, a free standing table and theatre seating or choose the super sofa option, and everything you need to feed everyone. And the fold-down side patio offers an LED TV, storage and a great place to relax outdoors above ground. There are many more features to enjoy, and several options to customize your fifth wheel. And if you would prefer to have a residential refrigerator, you should check out model 399TH-R!

 

The Momentum fifth wheel toy haulers by Grand Design are built for four seasons of travel with your off-road toys and include luxurious accommodations throughout for extreme living! Each is constructed to a superior standard with the thermal roof design, the full-laminated walls, the triple insulated garage floor in most toy haulers, the insulated gooseneck and the Rail-Tite underbelly seat. The MORryde CRE3000 suspension system and rubber pin box, plus the upgraded axle hangers provide the performance and smooth towing you desire, while the interior offers luxury such as color changing LED accent lighting, raised panel hardwood cabinet doors with hidden hinges, a sofa with headrest and removable swivel tables which include heat, massage and LED lighting package, and a central vacuum system with tools and dust pan. Start your extreme playtime now with a Momentum!      

What Our Customers Are Saying

We absolutely love our new travel trailer!

"We absolutely love our new travel trailer! We have recently been taking our rig in for some services, and the customer service that we are receiving is outstanding! Cheryle and Tara go above and beyond to meet our service requests professionally, and with the upmost courtesy. They maintain excellent communication with us throughout the entire process. The mechanics, especially George, are very knowledgeable - Anonymous
Location: Sacramento
Stock# 23922P
2022 399TH Specifications
Sleeps 3
Slides 3
Length 43 ft 1 in
Ext Height 13 ft 5 in
Interior Color PEBBLE
Hitch Weight 3400 lbs
Gross Weight 20000 lbs
Dry Weight 15900 lbs
Fresh Water Capacity 157 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 121953
For more information, call us at 916-921-2222 or Contact Us
Similar RVs and Floorplans

Loading

ManuFacts
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!
Happy Daze RV is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales taxes, registration, tags and delivery fees. Manufacture pictures, specifications, and features may be used in place of actual units on our lot. To preserve the quality and mileage of our coaches, we only do test drives with a qualified offer to purchase.