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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 $269,300.

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
  • Rear king tilt-a-bed with gel-infused memory foam(Permanent)71×78
  • Bunk beds with privacy partition and CD/DVD monitors(Permanent)28×76
  • 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
YEARSGVWRDRYMSRP
2021–2533,000 lb26,050 lb$456,471
202633,000 lb26,050 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.

OUR TAKE

The family DX3 - two real bunks with their own privacy partition and monitors behind the rear bedroom.

OTHER DX3 FLOORPLANS
Find one for sale

Live listings for the 37BD 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 ↗

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, 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.