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2021 Grand Design Momentum 397TH
UsedStock #6CR933
Listing price
2021 Momentum 397TH
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
The 397TH earns its reputation as one of the more luxurious toy haulers on the market. Triple axles with 17.5" H-rated tires handle the nearly 20,000 lb max weight with confidence, while 3,800+ lbs of cargo capacity means you're not leaving anything behind. Inside, the garage space transforms around a massive 5-person super sofa, and the front bedroom suite feels genuinely residential rather than like an afterthought. Grand Design included a kitchen island and residential stove, and the dual-pane windows are a real-world touch that owners specifically call out for eliminating condensation issues. Grand Design's warranty reputation is a known selling point here. Owners consistently describe claims being handled with minimal friction.
Length
43 ft 1 in
Dry weight
15,600 lbs
GVWR
20,000 lbs
Sleeps
3
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
There may be room for price negotiation.
$43,084 – $123,456
This unit has been on the lot for 61 to 90 days.
This unit is ranked 12 of 28 by asking price in this group.
The listing price on this unit has changed 2 times.
See the complete price timeline and the rest of this unit's pricing insights.
Optimum RV
Ocala, FL
Sells slower than 89% of US RV dealers
Compared with 1,117 dealers nationwide
2021 Grand Design Momentum 397TH Toy Hauler - Factory Ordered - FlexArmor Roof - Extensively Upgraded
One of the nicest and best-equipped Momentum 397THs you will find. Factory ordered with a unique all-white exterior and painted front cap with NO exterior decals or stickers to fade or peel.
This coach has been meticulously maintained and extensively upgraded. It features a FlexArmor Roof with transferable lifetime warranty, professionally completed Grand Design Technical Service Bulletin 24-001 structural work by General RV in 2025, brand-new tires in 2026, and a new heated power reclining loveseat in 2026.
Major Features and Upgrades:
Luxury Features:
The 397TH offers the highly desirable 12’6” separate garage, two full bathrooms, dual entry doors, kitchen island, walk-in master closet, HappiJac power bed/sofa system, three-season patio doors, rear patio deck with railing system, and excellent storage.
Other listings for this floor plan, ranked by condition, model year, distance, price, and listing quality.
This is not a typical stock Momentum 397TH. It was factory ordered and then extensively upgraded with thousands of dollars in improvements. The FlexArmor roof, decal-free exterior, structural work, new tires, new batteries, and numerous additional upgrades make this a turnkey coach ready for its next owner
