2026 Grand Design Momentum 397THS - 358314
For Sale in Draper, UT.

No Image Available
Sorry this unit has no videos

  • PRIMARY INFORMATION

  • Stock #358314
  • Year2026
  • ManufacturerGrand Design RV
  • MakeGrand Design
  • ModelMomentum
  • Floorplan397THS
  • TypeFifth Wheel
  • ConditionNew
  • Length44' 0"
  • VINBB04772

  • SPECS

  • Sleeps8
  • Slideouts3
Contact Seller! Email To Friend Warranty Quote
Make an Offer Calculate Payment Insurance Quote

Description

The 2026 Grand Design Momentum 397THS is a flagship luxury toy hauler built for travelers who demand residential comfort, massive cargo capacity, and rugged off-grid capability. At over 44 feet long with a triple-axle foundation, the 397THS delivers exceptional stability, storage, and towing confidence. The 13'6" garage transforms from a high-capacity cargo bay into a fully functional living space with a half bath, Happi-Jac queen bed, rollover sofas, and its own entry door. Whether hauling ATVs, motorcycles, kayaks, or a side-by-side, the garage is engineered for serious adventure. Inside, the main living area features opposing slides, a large entertainment center, theater seating, a tri-fold sofa, and a spacious kitchen with a 20-cu-ft 12V refrigerator, convection microwave, and a large island. The panoramic windows and high ceilings create an open, residential feel. Up front, the master suite includes a king bed, large wardrobe, washer/dryer prep, and direct access to the luxurious full bathroom with a 48" x 30" shower and molded seat. The Stealth 3+ A/C system provides 30,000 BTU of ultra-quiet cooling, while the 40,000 BTU furnace and tankless water heater ensure year-round comfort. With three awnings, a 60-gallon fuel station, optional 5.5kW generator, and available 3,000W solar package, the Momentum 397THS is built for extended stays, remote camping, and high-end adventure living. It’s a true luxury home on wheels designed for travelers who want capability without compromise.
General RV Center

14295 Minuteman Dr
Draper, Utah


Phone: 801-307-1070

View All Listings by General RV Center

Contact General RV Center

Documents


2026 Grand Design Momentum Brochure 1

Need Advice?

Join us on our popular forums at www.rvtalk.com where hundreds of RV enthusiast just like you ask questions, share opinions, and enjoy each others company - You'll be glad you did.

Our RV Destinations section will give you a starting point to plan your next journey or camping trip. Designed to provide everyone from full timers to occasional campers a complete resource, this section has links to campgrounds, resorts and local areas of interest all over the US.

Finally, our RV Insurance and RV Financing sections allow you to get quotes from the top providers.

Disclaimer

This site is created and maintained by RVUSA.com. Units listed for sale on this site are for sale by individuals and dealers in the US and Canada. This site is not affiliated with or endorsed by Grand Design RV Co.. To visit Grand Design RV Co.'s official site, please visit https://www.granddesignrv.com/.

Every attempt has been made to ensure the information contained in this site is valid at the time of publication. RVUSA.com however, reserves the right to make changes, corrections and / or improvements at any time and without notice. In addition, RVUSA.com disclaims any and all liability for damages incurred directly or indirectly as a result of errors, omissions or discrepancies.

This site is provided "as is" without warranty of any kind, either expressed or implied. You should not assume that this site is error-free. In no event shall RVUSA.com be liable for any damages whatsoever, including, without limitation, those resulting from loss of use, data or profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use or performance of this site or other documents which are referenced by or linked to this site.