Photo of Rv
Photo of Rv
Photo of Rv

RV Details

  • Year: 2021
  • Model: SOLITUDE 378MBS-R
  • Listing ID: 7001438
  • Partner ID: 5038895503
  • Posted On: Jan 6, 2026
  • Updated On: May 8, 2026

Description

2021 Grand Design Solitude 378MBS-R Off-Grid & Full-Time Ready $55,900 (Priced to Sell!)
Well-equipped Solitude with solar, lithium, generator, washer/dryer, and major upgrades already installed.

Built for full-time living and off-grid capability, comfortable for everyday use, able to run like a small home without hookups, and set up for reliable connectivity wherever you land.

Truly turnkey, hitch up and go, whether you're planning weekend trips, full-time travel, or extended stays.

Includes a complete lithium/solar/generator system, washer & dryer, disc brakes, and remote-work connectivity already installed and ready to use.

Factory Options

  • Dual-pane windows (excellent climate & sound insulation)

  • Slide toppers

  • 8K axles with disc brakes


$26,000+ Off-Grid Power System

  • Onan 5500 LP generator

  • 1,280W Renogy solar

  • 600Ah Battle Born lithium batteries

  • Dual Victron 3,000W inverters

  • Victron Cerbo GX MK2 with GX Touch 50 display

Capable of running ACs, appliances, and laundry without shore power.


Connectivity & Remote-Work Ready

  • Pepwave MAX Transit Cat-12 cellular modem (dual carrier capable)

  • Parsec Husky Pro 7-in-1 antenna

Reliable setup for full-timers and remote workers.


Interior Upgrades

  • Splendide stackable washer & dryer

  • Purple queen mattress with Hypervent airflow barrier

  • Custom desk/workstation conversion in master

  • Custom mid-bunk single bunks with storage below

  • Mattress Insider RV mattresses with Hypervent airflow barrier


Kitchen & Bath Enhancements

  • Flip-up buffet counter on island

  • Added kitchen storage solutions

  • Extra outlets and improved switch placement

  • Glass shower doors removed (lighter and more practical)


Exterior & Chassis

  • Gen-Y Executive torsion-flex hitch

  • Aluminum supports under black and gray tanks

  • Roof vent covers


Also Included with Purchase

  • B&W gooseneck hitch

  • Gen-Y manual latch coupler lock

  • Original MORryde pin box available


Clean title in hand.
Located near Cedar Hill, TN.

Also available separately: 2021 F-450 Super Duty Crew Cab $75,000.
Package deal available.

If you've been looking for a well-equipped, ready-to-travel Solitude without taking on a major upgrade project, this one is worth a closer look.

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