Dynamax DX3 37RB
Still in production. A used 2023 would run roughly $280,900.
A missing row means the maker never published that figure: unknown, not zero.
- 1× King tilt-a-bed with gel-infused memory foam(Permanent)71×78
- 1× Tri-fold sofa(Convertible)—
- 1× Residential-style dinette (three-seat power theater seats optional)(Convertible)—
Dynamax (Better tier): Forest River
| YEARS | GVWR | DRY | MSRP |
|---|---|---|---|
| 2017–18 | 33,000 lb | 26,919 lb | $476,142 |
| 2026 | 33,000 lb | 26,919 lb | $448,701 |
- 2017Introduced
- 2019Length restated 41'2" to 40'9"; wheelbase 286"
- 2023Detroit DD8 7.7L 375 hp chassis engine
- 2026Cummins L9 returns; exterior height 12'8"
- 2027Cummins L9 450 hp; MSRP $476,142
Findable: a few listed nationwide most weeks. Why: 10-year production run; still in production. Estimated from build volume and production span, not a count of live listings.
Longest DX3 - a full-width rear bath with two sinks plus a half bath, and the biggest fresh tank at 100 gal.
Live listings for the 37RB on the big marketplaces. Each search opens pre-filled with this exact floorplan:
Inventory varies by site and day. Slim pickings? search the whole DX3 line ↗
These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.
See where it ranks for you →Data compiled from manufacturer spec sheets, retrieved 2026-07.