Dynamax DX3 37BD
Class Cbuilt 2021– (in production)Better build tierPatient search on the used market
WHAT ONE COSTS
$456,500MSRP today
Still in production — a used 2023 would run roughly $315,000.
THE SPECS
Length39.2 ft
Height (incl. A/C)12.7 ft
Width8.4 ft
Interior height7.0 ft
GVWR33,000 lb
Dry weight26,050 lb
Sleeps6
Slide-outs2
Fresh water94 gal
Grey water52 gal
Black water52 gal
Air conditioning30,000 BTU
Solar (standard)200 W
Awning13.5 ft
Fuel100 gal
Generator8 kW Onan diesel
A missing row means the maker never published that figure — unknown, not zero.
WHERE PEOPLE SLEEP
- 1× Rear king tilt-a-bed with gel-infused memory foam(Permanent)71×78
- 2× Bunk beds with privacy partition and CD/DVD monitors(Permanent)28×76
- 1× Tri-fold sofa(Convertible)—
HOW IT'S BUILT — 4/5
WallsAzdel composite
FrameAluminum
RoofStandard
UnderbellyEnclosed
Dynamax (Better tier): Forest River
YEAR BY YEAR — WHAT CHANGED
| YEARS | GVWR | DRY | MSRP |
|---|---|---|---|
| 2021–25 | 33,000 lb | 26,050 lb | $456,471 |
| 2026 | 33,000 lb | 26,050 lb | $435,267 |
- 2021Introduced, replacing the 37BH
- 2023Detroit DD8 7.7L 375 hp chassis engine
- 2026Cummins L9 returns; exterior height 12'8"
- 2027Cummins L9 450 hp; MSRP $456,471
FINDING ONE
Patient search — weeks of watching, and probably some travel. Why: still in production. Estimated from build volume and production span — not a count of live listings.
THE READ
The family DX3 - two real bunks with their own privacy partition and monitors behind the rear bedroom.
OTHER DX3 FLOORPLANS
Is the 37BD your #1 — or just a spec sheet?
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 and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.
Rank it against your setup →Data compiled from manufacturer spec sheets, retrieved 2026-07.