Grand Design Momentum
Grand Design (Mixed tier): Grand Design's toy hauler family, spanning four sub-series: the flagship M-Class fifth wheels (the plain M/MS/TH codes), the lighter G-Class fifth wheels (3xxG), G-Class travel trailers (2xG/3xG), and the entry MAV travel trailers. The premium fifth wheels are laminated aluminum-cage coaches on par with Solitude; MAV is a lighter traditional build, which is why the line as a whole reads mixed rather than uniformly better.
What one actually costs today: $47,500–$190,300 across the line, new sticker or used estimate per model.
| MODEL | YEARS | LENGTH | GVWR | SLEEPS | PRICE TODAY | FINDING ONE |
|---|---|---|---|---|---|---|
| 17MAV | 2025– | 22.9 ft | 9,950 lb | 2 | $47,500 | Findable |
| 21G | 2019– | 26.9 ft | 11,000 lb | 6 | $73,900 | Common |
| 22MAV | 2024– | 26.5 ft | 9,950 lb | 5 | $49,400 | Findable |
| 23G | 2021–26 | 28.8 ft | 13,000 lb | 6 | $53,200used est. | Findable |
| 24MAV | 2025– | 29.9 ft | 11,000 lb | 3 | $52,700 | Findable |
| 25G | 2019– | 30.9 ft | 13,000 lb | 6 | $80,300 | Common |
| 27G | 2025– | 32.3 ft | 13,000 lb | 6 | $77,400 | Findable |
| 27MAV | 2024– | 32.2 ft | 11,000 lb | 6 | $52,900 | Findable |
| 28G | 2019–26 | 33.9 ft | 13,000 lb | 6 | $56,200used est. | Findable |
| 28MAV | 2026– | 33.9 ft | 11,000 lb | 6 | $60,200 | Patient search |
| 29GS | 2025– | 34.5 ft | 13,000 lb | 6 | $83,300 | Findable |
| 30G | 2021–26 | 34.8 ft | 13,000 lb | 7 | $57,900used est. | Findable |
| 31G | 2021– | 35.9 ft | 13,000 lb | 6 | $86,200 | Findable |
| 320G | 2019– | 36.3 ft | 16,400 lb | 6 | $127,900 | Findable |
| 325G | 2024– | 35.5 ft | 18,000 lb | 6 | $120,700 | Findable |
| 344M | 2025– | 39.9 ft | 19,000 lb | 6 | $167,600 | Findable |
| 350G | 2019– | 39.8 ft | 18,000 lb | 5 | $130,700 | Findable |
| 351MS | 2019– | 39.9 ft | 19,000 lb | 6 | $167,600 | Findable |
| 363G | 2027– | 41.6 ft | 19,000 lb | 9 | $116,900 | Findable |
| 381MS | 2021– | 43.9 ft | 23,500 lb | 6 | $176,000 | Findable |
| 392M | 2025– | 45.9 ft | 23,500 lb | 9 | $183,500 | Findable |
| 394G | 2026– | 44.9 ft | 22,500 lb | 7 | $126,300 | Patient search |
| 395MS | 2021– | 44.2 ft | 22,500 lb | 8 | $161,700 | Findable |
| 395MT | 2026– | 46.3 ft | 23,500 lb | 7 | $181,100 | Patient search |
| 396DB | 2026– | 46.3 ft | 23,500 lb | 7 | $186,300 | Patient search |
| 397TH | 2018–25 | 44.2 ft | 22,500 lb | 5 | $117,100used est. | Findable |
| 399M | 2026– | 44.8 ft | 23,500 lb | 5 | $190,300 | Patient search |
| 410TH | 2023–26 | 44.9 ft | 22,500 lb | 6 | $118,200used est. | Findable |
| 414M | 2024–26 | 46.3 ft | 23,500 lb | 7 | $119,000used est. | Findable |
| 415G | 2025– | 44.9 ft | 22,500 lb | 6 | $125,400 | Findable |
Assembled from eight-plus model years of brochures, floorplan by floorplan. This is the part a spec sheet can't tell you: which years changed, and which year is the buy.
- 2018Predecessor 381M introduced with a 20,000 lb GVWR
- 2018Predecessor 395M introduced with a 20,000 lb GVWR
- 2019Introduced in the first Momentum G-Class lineup
- 2019Introduced as the 351M: 38' 9", 16,800 lb GVWR, 13,600 lb dry
- 2020Predecessor 29G introduced
- 2021Introduced
- 2021Renamed 351MS
- 2021Renamed 381MS
- 2021Renamed 395MS; GVWR raised to 22,500 lb
- 2024Introduced in the first Momentum MAV lineup
- 2024Introduced
- 2024GVWR up to 19,000 lb, dry 14,700 lb; MSRP $126,355
- 2025Introduced
- 2025Introduced as the 29GS
- 2026Introduced
- 2026MSRP $149,371 at 40' 6"
- 2026GVWR raised to 23,500 lb
- 2026Introduced alongside the long-running 395MS
- 2027Moved to dealer-stock-only status
- 2027Momentum M-Class folded back under the Momentum badge; dry 15,760 lb, pin 3,000 lb; MSRP $167,621
- 2027Introduced
A line this size hides real differences behind similar names. Set what you care about (weight, bunks, build, budget) as sliders, and watch every floorplan here get ranked against the whole market, not just against each other.
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