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Outdoors RV Back Country Series MTN TRX Travel Trailer RVs For Sale

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The Back Country Series MTN TRX travel trailers by Outdoor RV are designed with an off-road chassis and include a Cummins Onan 3.6k On-Board LP generator and a No Boundaries off-grid 170 watt solar panel with 30 Amp 5 stage controller allowing the outdoor enthusiast the choice to camp off-grid, off-road or anywhere they might venture!


Each is built with the Climate Designed Four Seasons package which includes triple layered four seasons roof insulation, an Extreme camping heat system with an XL furnace, and a unique heated insulated holding tank design. The integrated A-frame chassis construction, the off-road X4 suspension, the KYB world class shock absorbers and the heavy duty axles with off-road brake system give you the freedom to go off the beaten path. And a few interior highlights include residential height kitchen countertops, full extension 100 lb. metal drawer guides, a vaulted radius ceiling providing approximately 5" of additional headroom, and Ultra leather furniture and dinette seats.


You don't have to make reservations when you camp in an Outdoors RV Back Country MTN TRX! Choose your favorite travel trailer, load up and start exploring off-road, off-grid, or where ever, the choice is yours each time!

Back Country Series MTN TRX Features:

Standard Features (2024)


Off-Grid Camping Features

  • Cummins Onan 3.6K On-Board LP Generator
  • No Boundaries Off-Grid 170 Watt Solar Panel w/ 30 Amp 5 Stage Controller
  • 100 Gallon Fresh Water Capacity (All Models)
  • 80 Lbs. of Propane Capacity (All Models)
  • 50 Gallons Grey Water Capacity (21RWS)
  • 80 Gallons Grey Water Capacity (24KRS, 28DBS)
  • Progressive Dynamics (4) Stage Converter w/ Built In Charge Wizard
  • No Boundaries Off-Grid Solar Ready Roof Port for up to 510 Watts
  • Door Side Portable Solar Panel Port
  • Energy Saving LED Interior & Exterior Lights
  • RV LED HD Living Room TV's w/ HDMI Bluetooth DVD Sound System
  • 12V Triple Charge Station (Charges I-Pads and Cell Phones)
  • 12V USB Ports on Both Sides of Bed/Dinette
  • Patio Area & Entry Steps Lighted by LED Awning Strip Light

Climate Designed Four Seasons

  • Mountain Extreme Thermal Pane Windows
  • Norcold Cold Weather Fridge Kit to - 0 F
  • Triple Layered Four Seasons Roof Insulation
  • 1" Thick Exterior Shower Door / Luggage Doors
  • Thermal Insulated Skylights & Bedroom Vent
  • XL Furnace (Extreme Camping Heat System)
  • Unique Heated Insulated Holding Tank Design

Built Off Road Performance

  • Custom Built Cambered Off Road HD 8' Chassis (All Models)
  • Integrated A-Frame Chassis Construction
  • Xtra Tall 24" Power Tongue Jack w/ LED Light
  • Off Road X4 Suspension - MorRyde CRE 3000 Suspension, HD Shackle Kit
  • KYB World Class Shock Absorbers
  • 15" Rugged Mud Flaps
  • Heavy Duty 6 Lug 5200 lb. Axles w/ Off-Road Brake System (All Models)
  • 16" Goodyear Endurance 235 E Range 10 Ply Radial Tires
  • Roto-Torqued "Outdoors Tough" Cabinetry (All Cabinets)
  • Off-Road Clearance Lights
  • Radius Crowned Full Walk On Roof
  • Exterior Grade Tongue & Groove Plywood Sub-Floor
  • Marine Grade Plywood Roof Decking
  • Full Extension 100 lb. Metal Drawer Guides
  • Rugged 2" Bonded Aluminum Frame Walls (Every Wall)
  • HD Full Size Fiberglass Front Cap w/ Armor Guard Protection

Highlighted Features


  • LG Solid Surface Galley Countertop
  • Single Basin Farm Sink w/ Protective Metal Basin Grid
  • High Rise Pull Out Faucet
  • Sunken Range w/ Glass Front & Sealed Burners
  • Glass Top Range, Knife Rack & Granite Designed Backsplash
  • XL (8) Fridge (All Models)
  • Pot & Pan Drawer (Most Models)
  • Residential Height Countertops
  • Full Extension 100 lb. Metal Drawer Guides

Living Room / Slide Out / Dinette

  • Vaulted Radius Ceiling Providing Approx. 5" of Additional Headroom
  • Dual Pane Living Room Skylight w/ Shade
  • Ultra Leather Furniture & Dinette Seats
  • RV Triple Charge Station (Charges I-Pads and Cell Phones)
  • Mountain Dinette w/ Family XL Table (21RWS, 24KRS, 28DBS)
  • XL Dinette Drawers
  • XL Panoramic Slide Out Windows (21RWS, 24KRS, 28DBS)
  • 12V LED Living Room TV
  • HDMI Bluetooth Sound System

Bedroom / Bathroom

  • Easy Access Home Defense Bed Safe
  • Mountain Comfort Premium Mattress
  • 12V USB Ports by Both Sides of Bed
  • XL Bed Nightstands
  • Plywood Bed Support w/ Bed Storage
  • Drawers Underneath Both Sides of Bed

See us for a complete list of features and available options!

All standard features and specifications are subject to change.

All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.

Due to the current environment, our features and options are subject to change due to material availability.


Outdoors RV

Outdoors RV Manufacturing was born in 2009 with the vision of owners Ron and Sherry Nash. Our company focus is to design and build recreational vehicles for the customers who desire to enjoy the outdoors, no matter the terrain or weather.  We call it "mountain tough four seasons camping."


Just like the picturesque mountain valley where our factory is located, the RV adventurer of the Western United States and Western Canada will find beautiful pristine alpine lakes, rugged snow capped mountains, lush rain forests, beautiful desert landscapes, and incredible ocean views to explore. We here at Outdoors RV are proud  RV owners and love the outdoor lifestyle in out many adventures we have had customers tell us that they wished a manufacturer would build an RV that was designed for our backyard versus the industry standard that is designed for the pavement and the 3 summer months.


Outdoors answers the call in designing three different series of RV's, two based on how you camp (backcountry series & mountain series) and one being the premium trim package.


Let you outdoor adventures begin!