Keystone Alpine
28 floorplansFifth wheel2010– (in production)Mixed build tier
Keystone (Mixed tier): Keystone RV
What one actually costs today: $40,600–$129,000 across the line, new sticker or used estimate per model.
THE FLOORPLANS — 28
| MODEL | YEARS | LENGTH | GVWR | SLEEPS | PRICE TODAY | FINDING ONE |
|---|---|---|---|---|---|---|
| 3011CK | 2024–26 | 34.9 ft | 15,000 lb | 4 | $87,300used est. | Findable |
| 3020RE | 2018–22 | 34.2 ft | 15,000 lb | 4 | $61,000used est. | Findable |
| 3100RE | 2026– | 34.9 ft | 16,000 lb | 4 | $101,800 | Findable |
| 3102RL | 2023–25 | 35.8 ft | 15,000 lb | 4 | $85,900used est. | Findable |
| 3120RS | 2020–22 | 34.9 ft | 15,000 lb | 4 | $67,800used est. | Findable |
| 3220RL | 2021–25 | 36.8 ft | 15,500 lb | 4 | $92,200used est. | Findable |
| 3303CK | 2024– | 37.3 ft | 16,500 lb | 4 | $115,600 | Findable |
| 3320MK | 2019–21 | 34.5 ft | 15,000 lb | 4 | $56,500used est. | Findable |
| 3400RS | 2017–20 | 36.3 ft | 15,000 lb | 4 | — | Findable |
| 3450GK | 2020–21 | 37.4 ft | 15,500 lb | 4 | $62,900used est. | Findable |
| 3450RL | 2011–15 | 38.8 ft | 15,500 lb | 4 | — | Findable |
| 3500RE | 2010–15 | 38.3 ft | 15,500 lb | 4 | — | Findable |
| 3500RL | 2017–20 | 39.0 ft | 15,500 lb | 4 | — | Findable |
| 3640RL | 2010–12 | 39.2 ft | 15,500 lb | 4 | — | Findable |
| 3650RL | 2013–23 | 38.7 ft | 15,500 lb | 4 | $83,800used est. | Common |
| 3660FL | 2016–18 | 39.1 ft | 15,500 lb | 6 | — | Findable |
| 3700FL | 2018–26 | 41.4 ft | 17,090 lb | 6 | $97,000used est. | Common |
| 3710FL | 2026– | 41.4 ft | 18,000 lb | 6 | $128,900 | Findable |
| 3710KP | 2019–21 | 41.4 ft | 16,500 lb | 6 | $62,900used est. | Findable |
| 3712KB | 2020– | 41.4 ft | 16,500 lb | 6 | $129,000 | Common |
| 3720MD | 2022–25 | 41.4 ft | 16,500 lb | 6 | $100,400used est. | Findable |
| 3790FK | 2020–25 | 41.4 ft | 16,500 lb | 6 | $107,300used est. | Common |
| 3800FK | 2018–20 | 41.4 ft | 16,500 lb | 6 | $40,600used est. | Findable |
| 3820FK | 2025– | 41.9 ft | 18,000 lb | 6 | $123,900 | Findable |
| 3850RD | 2019–23 | 41.4 ft | 16,500 lb | 6 | $93,200used est. | Findable |
| 3900RE | 2015–19 | 39.1 ft | 15,500 lb | 4 | — | Findable |
| 3910RK | 2021– | 42.9 ft | 16,500 lb | 6 | $124,700 | Common |
| 3912DS | 2023–25 | 43.2 ft | 16,500 lb | 6 | $92,700used est. | Findable |
THE LINE, YEAR BY YEAR
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.
- 2010Introduced with the Alpine line
- 2011Introduced
- 2012Discontinued
- 2013Introduced
- 2015Discontinued
- 2016Introduced
- 2017Introduced
- 2018Introduced
- 2018Discontinued
- 2019Introduced
- 2020Introduced
- 2020Discontinued
- 2020Final model year
- 2021Introduced
- 2021Discontinued
- 2021Replaced by 3712KB
- 2022Discontinued
- 2022Introduced
- 2023Introduced
- 2023Final model year
- 2023Fresh water raised from 66 to 75 gal
- 2024Introduced
- 2025Discontinued
- 2025Introduced
- 2026Replaced by 3100RE
- 2026Introduced
- 2026Final model year
- 2026Dual 18K Furrion Chill Cube A/C with heat pump and SolarFlex Protect 220 became standard
Which Alpine is the right one — if any?
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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