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 | $58,300used 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 | $61,700used 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 | $63,500used 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 | — | 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 | $128,500used 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 | $129,700used est. | Findable |
| 414M | 2024–26 | 46.3 ft | 23,500 lb | 7 | $130,600used 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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