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Contact Information

RV Details

  • Price: $260,000
  • Year: 2021
  • Model: DX3 37RB
  • Listing ID: 6986914
  • Partner ID: 5038308889
  • Posted On: Oct 31, 2025
  • Updated On: Oct 31, 2025

Description

2021 Dynamax DX3 37RB Super C
Cummins 360 on Freightliner M2
King Suite
1.5 Baths
$260,000
NO TRADES
I love this coach, but Im downsizing. Stored indoors when home and well-maintained. Its a perfect traveler for a solo driver or a familytons of power, space, and storage.
Details:
Super C powertrain: Cummins 360 HP diesel + Allison on Freightliner M2
Engine: Cummins 360 hp diesel on Freightliner M2 chassis
Length: 40'9" with 3 slideouts for maximum space
Sleeping Capacity: Sleeps up to 5, includes 1.5 bathrooms
Bedroom: King-size suite with dual sinks and Smart TVs
Washer & Dryer
Kitchen: Residential style with 18 cu. ft. fridge, induction cooktop, convection oven, plus washer & dryer
Climate Control: Two A/C units, 30,000 BTU heating
Power: Solar power option and diesel generator for off-grid living
Heating System: Aqua-Hot hydronic system
Build: Aluminum frames, crowned fiberglass roof, no wood walls
Water Tanks: 100-gallon fresh water, 52-gallon grey/black tanks
Convenience: Keyless entry, exterior entertainment, automatic leveling
Usage:
Miles: 54,895
Generator Hours: 1,426
Why this DX3?
Super C durability with a residential 37RB layouttrue master suite, huge living area, and the reliability of the M2/Cummins/Allison combo. Easy highway manners, confident towing, and simple serviceability at truck centers
LOCATION:
Billings, Montana
Delivery: Available (cost based on distance)
Message me for more info!
TEXT Tannis @ (406) 671-4619

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