Forest River Sierra
30 floorplansFifth wheel2015– (in production)Mixed build tier
Forest River (Mixed tier): Sierra is the Sandpiper's badge twin - welded aluminum-framed laminated construction, mid-pack Forest River quality control.
What one actually costs today: $51,700–$100,400 across the line, new sticker or used estimate per model.
THE FLOORPLANS — 30
| MODEL | YEARS | LENGTH | GVWR | SLEEPS | PRICE TODAY | FINDING ONE |
|---|---|---|---|---|---|---|
| 38FKOK | 2018–22 | 41.8 ft | 15,823 lb | 6 | — | Common |
| 39BARK | 2020–22 | 41.0 ft | 15,079 lb | 6 | — | Findable |
| 321RL | 2020–22 | 35.0 ft | 13,669 lb | 4 | — | Findable |
| 368FBDS | 2019–20 | 41.3 ft | 15,500 lb | 6 | — | Findable |
| 372LOK | 2016–20 | 41.8 ft | 15,500 lb | 8 | — | Findable |
| 373BH | 2020–20 | 41.7 ft | 15,500 lb | 6 | — | Findable |
| 377FLIK | 2015–19 | 40.6 ft | 15,500 lb | 8 | — | Findable |
| 379FLOK | 2017–21 | 42.8 ft | 16,069 lb | 6 | $51,700used est. | Findable |
| 383RBLOK | 2019–20 | 42.2 ft | 15,500 lb | 10 | — | Findable |
| 384QBOK | 2017–22 | 41.7 ft | 16,132 lb | 8 | — | Common |
| 387MKOK | 2016–19 | 41.6 ft | 15,500 lb | 8 | — | Findable |
| 388BHRD | 2022–22 | 43.4 ft | 15,904 lb | 8 | — | Findable |
| 388HRD | 2024–24 | 43.7 ft | 15,094 lb | 7 | — | Findable |
| 391FLRB | 2022–24 | 43.5 ft | 16,009 lb | 4 | — | Findable |
| 2850RL | 2017–19 | 31.4 ft | 10,000 lb | 6 | — | Findable |
| 3250IK | 2017–19 | 32.1 ft | 10,000 lb | 6 | — | Findable |
| 3330BH | 2022–22 | 38.3 ft | 13,769 lb | 6 | — | Findable |
| 3370RLS | 2023– | 36.3 ft | 13,560 lb | 4 | — | Common |
| 3440BH | 2022–22 | 40.4 ft | 14,075 lb | 6 | — | Findable |
| 3550BH | 2023– | 43.5 ft | 15,500 lb | 8 | — | Common |
| 3660MB | 2022–22 | 41.3 ft | 14,115 lb | 6 | — | Findable |
| 3710HBFB | 2026– | 42.8 ft | 15,500 lb | 8 | — | Findable |
| 3770FL | 2022–22 | 40.6 ft | 14,175 lb | 6 | — | Findable |
| 3800RK | 2024– | 44.1 ft | 15,500 lb | 4 | $100,400 | Findable |
| 3844QUAD | 2026– | 42.8 ft | 16,295 lb | 6 | — | Findable |
| 3880BH | 2023–25 | 42.2 ft | 16,260 lb | 7 | — | Findable |
| 3900HBLR | 2025– | 42.8 ft | 16,085 lb | 3 | — | Findable |
| 3990FL | 2023– | 43.5 ft | 15,375 lb | 10 | — | Common |
| 4002FB | 2023– | 43.4 ft | 15,500 lb | 6 | — | Common |
| 4003MB | 2023– | 42.8 ft | 15,500 lb | 7 | — | Common |
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.
- 2015Introduced
- 2016Introduced
- 2017Introduced at 42'9" with a 15,500 lb GVWR and 2,495 lb pin
- 2017Introduced
- 2017Introduced under Sierra HT
- 2018Introduced
- 2018Length listed at 41'9"
- 2019Introduced
- 2019Discontinued
- 2019Length listed at 41'5"
- 2020Introduced
- 2020Discontinued
- 2020Discontinued after a single model year
- 2020GVWR raised 569 lb to 16,069 lb, pin to 2,568 lb; length back to 42'9"
- 2021Not offered
- 2021Final model year
- 2022Returned at 15,823 lb GVWR, then discontinued
- 2022Returned at 15,079 lb GVWR, then discontinued
- 2022Returned at 13,669 lb GVWR, then discontinued
- 2022Returned at 16,132 lb GVWR, then discontinued
- 2022Discontinued after a single model year
- 2022Introduced
- 2022Introduced under Sierra Luxury
- 2023Introduced
- 2024Discontinued after a single model year
- 2024Introduced
- 2024Discontinued
- 2025Carried over unchanged
- 2026Introduced
- 2026Still listed - identical spec to the Sandpiper 3800RK, roughly $250 apart on MSRP
Which Sierra 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.
Rank it against your setup →