Used 2021 Grand Design RV Momentum 397th for sale at Blue Fox RV in North Logan, UT. Sleeps 7, 43.1 ft long, 3 slides. Listed at $62,995.
Listing last updated .
2021 Grand Design RV Momentum 397th
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Built for the road, ready for your next trip.
- Dual Entry
- Two Full Baths
- Kitchen Island
- 12' 6" Separate Garage (see photo for exact details)
- Island with Bar Stools
- Walk-In Closet
- RV King size bed
- On board generator
This Momentum toy hauler provides the maximum entertainment with its 49" LED TV in the living area, 32" LED TV in the private bedroom with an RV King, 32" LED TV in the 12' 6" separate garage, and exterior LED TV! You can choose to add the optional Super Sofa which will create an amazingly comfortable area to sit down across from the electric fireplace. The two full bathrooms are one of the most impressive features found on this unit, and the three power awnings are another shocking addition. Within the kitchen, you'll be able to prepare all of your family's favorite dishes when you use the chef-inspired range and oven, and the window behind the range allows you to view the campsite while you cook. If you would prefer to have a residential refrigerator, you should check out model 397TH-R!
The very best adventures are waiting for you with the Grand Design Momentum toy hauler! The Momentum combines extreme play with extraordinary living so that you can have the best of both worlds. You won't have to miss out on any of your favorite features from home because the Momentum has just about everything. With the Weather-Tek insulation, you won't have to let anything hold you back from getting out and taking an adventure during any season, and the Tuff Ply gas-and-oil-resistant garage flooring is a quality base for your toys. The flush-mount tie-downs rated for 2,500 LBS will keep your gear in place as you travel, and there is a protective diamond plate on the garage sidewalls for additional protection
Blue Fox Rv
390 W 2500 N North Logan Utah
435-890-4602
435-317-3625
Take a look around — literally.
A short tour from our lot. We narrate the build details and the storage you can't see in photos.
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Towing & Dimensions 6
Tires & Wheels 10
Cargo 5
Quick Overview 8
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VisitNorth Logan, UT 84341
Local. Honest. Built to last.
Most of our buyers come from referrals because we sweat the small stuff after the sale.
Quick answers, no sales pitch.
Is the 2021 Grand Design RV Momentum 397th still available?
Yes — as of June 24, 2026, this unit is on our lot in North Logan, UT. Last updated June 23, 2026.
How much is the 2021 Grand Design RV Momentum 397th?
$62,995. With $12,599 down at 6.99% APR over 180 months, that's about $453/mo. We accept trades — talk to us about your current unit when you visit.
What can tow this Grand Design RV Momentum?
1-ton truck with a proper heavy-duty towing package required — F-350+, Silverado 3500+, Ram 3500+. Dry weight is 15,600 lbs. Hitch/tongue weight is 3,375 lbs.
How many people can sleep in the Momentum?
7 people comfortably. Bed configuration: 2 queen, 1 bunk, 1 sofa-bed.
What's the warranty?
Basic warranty: 12. We'll go over all coverage details at the walkthrough before delivery.
Can I trade in my current RV?
Yes — we take trades every week, even if you don't buy from us. We'll give you a real offer once we see the RV. Call (435) 317-3625 or fill out the inquiry form below to get started.
How do I schedule a walkthrough?
Call (435) 317-3625, or fill out the inquiry form below. Same-day response during business hours.
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