Outdoors RV Back Country Series MTN TRX Travel Trailer RVs For Sale
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 400 watt solar panel, 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. 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. If you choose the optional Titanium Series, you'll enjoy a premium trim package and more stand-out features; see dealer for more details!
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!
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Back Country Series MTN TRX 20BD
Outdoors RV Back Country Series MTN TRX travel trailer 20BD highlights: ... more about Back Country Series MTN TRX 20BD
Specifications
Sleeps 4 Length 25 ft 3 in Ext Height 11 ft 7 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 755 lbs GVWR 9995 lbs Dry Weight 6155 lbs Cargo Capacity 3840 lbs Fresh Water Capacity 100 gals Grey Water Capacity 40 gals Black Water Capacity 40 gals Tire Size ST235/80/16E Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Available Beds Queen Refrigerator Type 12 Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 5200 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR Swing Out 32" LED Awning Info 17' Axle Count 2 Number of LP Tanks 2 Shower Type Tub/Shower Combo Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 21RWS
Outdoors RV Back Country Series MTN TRX travel trailer 21RWS highlights: 45" x ... more about Back Country Series MTN TRX 21RWS
Specifications
Sleeps 3 Slides 1 Length 26 ft 3 in Ext Height 11 ft 7 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 900 lbs GVWR 9995 lbs Dry Weight 6800 lbs Cargo Capacity 3195 lbs Fresh Water Capacity 100 gals Grey Water Capacity 50 gals Black Water Capacity 40 gals Tire Size ST235/80/16E Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Available Beds Queen Refrigerator Type 12V Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 5200 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR Swing Out 32" LED Awning Info 19' Axle Count 2 Number of LP Tanks 2 Shower Type Neo-Angled Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 23BCS
Outdoors RV Back Country Series MTN TRX travel trailer 23BCS highlights: Front ... more about Back Country Series MTN TRX 23BCS
Specifications
Sleeps 7 Slides 1 Length 27 ft 10 in Ext Height 11 ft 7 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 850 lbs GVWR 9995 lbs Dry Weight 7050 lbs Cargo Capacity 2945 lbs Fresh Water Capacity 100 gals Grey Water Capacity 50 gals Black Water Capacity 40 gals Tire Size ST235/80/16E Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Number Of Bunks 2 Available Beds Queen Refrigerator Type 12V Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 5200 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR 40" LED HDTV Awning Info 20' Axle Count 2 Number of LP Tanks 2 Shower Type Standard Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 24KRS
Outdoors RV Back Country Series MTN TRX travel trailer 24KRS highlights: Dual ... more about Back Country Series MTN TRX 24KRS
Featured 24KRS
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Used 2024 Back Country Series MTN TRX 24KRS
- Location: Pendleton, OR
- Stock #: IGSN-8556285
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New 2024 24KRS
- Location: Pendleton, OR
- Stock #: IGSN-16420375
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New 2025 24KRS
- Location: Pendleton, OR
- Stock #: IGSN-16629529
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Used 2023 Back Country Series MTN TRX 24KRS
- Location: Pendleton, OR
- Stock #: IGSN-17157638
Specifications
Sleeps 5 Slides 1 Length 28 ft 8 in Ext Height 11 ft 7 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 965 lbs GVWR 9995 lbs Dry Weight 7430 lbs Cargo Capacity 2565 lbs Fresh Water Capacity 100 gals Grey Water Capacity 80 gals Black Water Capacity 40 gals Tire Size ST235/80/16E Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Available Beds Queen Refrigerator Type 12V Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 5200 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR 40" LED HDTV Awning Info 20' Axle Count 2 Number of LP Tanks 2 Shower Type Neo-Angled Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 25DVS
Outdoors RV Back Country Series MTN TRX travel trailer 25DVS highlights: 45" x ... more about Back Country Series MTN TRX 25DVS
Specifications
Sleeps 5 Slides 1 Length 31 ft 3 in Ext Height 11 ft 7 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 950 lbs GVWR 11000 lbs Dry Weight 7550 lbs Cargo Capacity 3450 lbs Fresh Water Capacity 100 gals Grey Water Capacity 50 gals Black Water Capacity 40 gals Tire Size ST235/80/16E Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Available Beds Queen Refrigerator Type 12V Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 5200 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR 32" TV Awning Info 21' Axle Count 2 Number of LP Tanks 2 Shower Type Standard Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 26RPS
Outdoors RV Back Country Series MTN TRX travel trailer 26RPS highlights: Dual ... more about Back Country Series MTN TRX 26RPS
Specifications
Sleeps 3 Slides 2 Length 31 ft 11 in Ext Height 13 ft 2 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 950 lbs GVWR 12995 lbs Dry Weight 9550 lbs Cargo Capacity 3445 lbs Fresh Water Capacity 100 gals Grey Water Capacity 65 gals Black Water Capacity 40 gals Tire Size ST235/85/16G Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Available Beds Queen Refrigerator Type 12V Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 6800 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR 40" LED HDTV Awning Info 20' Axle Count 2 Number of LP Tanks 2 Shower Type Neo-Angled Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 28DBS
Outdoors RV Back Country Series MTN TRX travel trailer 28DBS highlights: ... more about Back Country Series MTN TRX 28DBS
Specifications
Sleeps 9 Slides 1 Length 33 ft 2 in Ext Height 11 ft 7 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 995 lbs GVWR 11000 lbs Dry Weight 8030 lbs Cargo Capacity 2970 lbs Fresh Water Capacity 100 gals Grey Water Capacity 80 gals Black Water Capacity 40 gals Tire Size ST235/80/16E Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Number Of Bunks 2 Available Beds Queen Refrigerator Type 12V Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 5200 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR 40" LED HDTV Awning Info 21' Axle Count 2 Number of LP Tanks 2 Shower Type Standard Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 20BD TS
Outdoors RV Back Country Series MTN TRX Titanium Series travel trailer 20BD TS ... more about Back Country Series MTN TRX 20BD TS
Have a question about this floorplan? Contact Us
Specifications
Sleeps 4 Length 25 ft 3 in Ext Height 11 ft 7 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 755 lbs GVWR 9995 lbs Dry Weight 6635 lbs Cargo Capacity 3840 lbs Fresh Water Capacity 100 gals Grey Water Capacity 40 gals Black Water Capacity 40 gals Tire Size ST235/80/16E Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Available Beds Queen Refrigerator Type 12 Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 5200 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 15000 btu TV Info LR Swing Out 32" LED Awning Info 17' Axle Count 2 Number of LP Tanks 2 Shower Type Tub/Shower Combo Electrical Service 30 amp Similar Floorplans
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Back Country Series MTN TRX 27SPS
Outdoors RV Back Country Series MTN TRX travel trailer 27SPS highlights: Side ... more about Back Country Series MTN TRX 27SPS
Have a question about this floorplan? Contact Us
Specifications
Sleeps 4 Slides 1 Length 33 ft Ext Height 13 ft 2 in Int Height 6 ft 11 in Interior Color Mountain Juniper Hitch Weight 960 lbs GVWR 12995 lbs Dry Weight 9100 lbs Cargo Capacity 3895 lbs Fresh Water Capacity 100 gals Grey Water Capacity 67 gals Black Water Capacity 40 gals Tire Size ST235/85/16G Furnace BTU 35000 btu Generator Cummins Onan 3.6K On-Board LP Available Beds Queen Refrigerator Type 12 Refrigerator Size 10 cu ft Cooktop Burners 3 Number of Awnings 1 Axle Weight 6800 lbs LP Tank Capacity 40 lbs Water Heater Capacity 10 gal AC BTU 13500 btu TV Info LR Swing Out 40" LED Awning Info 20' Axle Count 2 Number of LP Tanks 2 Shower Type Standard Electrical Service 30 amp Similar Floorplans
Back Country Series MTN TRX Features:
Standard Features
PLEASE NOTE: Features and options separated by models below
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BACK COUNTRY SERIES MTN TRX
Off-Grid Camping Features
- Cummins Onan 3.6K On-Board LP Generator
- No Boundaries Off-Grid 400 Watt Solar Panel w/ Controller
- 100 Gallons Fresh Water Capacity (All Models)
- 80 Lbs of Propane Capacity (All Models)
- 50 Gallons Grey Water Capacity (Model Specific)
- 80 Gallons Grey Water Capacity (Model Specific)
- WFCO Touch Free Automatic Lithium Battery Detect Converter
- No Boundaries Off-Grid Solar Ready Roof Port for up to 600 Watts
- Door Side Portable Solar Port
- Energy Saving LED Interior & Exterior Lights
- LED HD Living Room TV’s w/ 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 Light Strip
- Party Deck Ramp Door w/ Rail Kit, Stairs & Rear Awning (26RPS)
- Party Deck Ramp Door with Rail Kit and Stairs (27SPS)
Climate Designed Four Seasons
- Mountain Extreme Thermal Pane Windows
- 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)
- Custom Built Cambered Off Road HD 10” Chassis (26RPS, 27SPS)
- Integrated A-Frame Chassis Construction
- Xtra Tall 24” Power Tongue Jack w/ LED Light
- Off Road X4 Suspension - MorRyde CRE All Trek4000, 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)
- Heavy Duty 8 Lug 6800 lb Axles w/ Off-Road Brake System (26RPS, 27SPS)
- 16” Goodyear Endurance 235 E Range 10 Ply Radial Tires / Spare
- 16” Goodyear Endurance 235 G Range 14 Ply Radial Tires / Spare (26RPS, 27SPS)
- 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
- Wallace Forge Underslung Coup
Highlighted Features
Kitchen
- 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
- Off Grid 10 Cu. Ft. 12 Volt Fridge
- Pot & Pan Drawer (Most Models)
- Residential Height Countertops
- Full Extension 100 lb. Metal Drawer Guides
- Privacy Blackout Roll Shades w/Wall Clips
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
- 12V Triple Charge Station (Charges I-Pads and Cell Phones)
- Mountain Dinette w/ Family XL Table (Most Models)
- XL Panoramic Slide Out Windows (Most Models)
- LED Living Room TV
- Bluetooth Sound System
- Privacy Blackout Roll Shades w/Wall Clips
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
- Privacy Blackout Roll Shades w/Wall Clips
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BACK COUNTRY MNT TRX TITANIUM SERIES (Optional)
Premium Exterior Features
- Ground Control Auto Leveling System (5th Wheel Standard)
- Lamilux HD 4000 High Gloss Silver Fiberglass
- Silver Fiberglass Front Cap
- Sleek Design Frameless Thermal Pane Windows
- Frameless Window Entry Door w/ Black Out Privacy Shade
- Wireless Rear, Side(s) Turn Camera System
- Slide Topper Awnings - Where Applicable
- Chrome Door Locks
- Brushed Aluminum Grab Bar Handle
- Chrome Luggage Door Handles
- 15K A/C (Unless Already Standard)
- Rear Back Up Lights
- Remote Camping Package
- (Inc: Slideouts, Awning, Outside Lights)
Premium Interior Features
- Hardwood Window Valances
- Privacy Black Out Roll Shades
- Hardwood Slide Out Fascia(s)
- LG Solid Surface Tops (Galley, Lavy, Entertainment Center & Bed Nightstands)
- Hardwood Raised Panel Knotty Alder Cabinet Doors
- Mountain Lodge Interiors (Hardwood Throughout & All Leather Design)
- Living Room Coat Hooks on Hardwood (Select Models)
Mountain Lodge Inspired Kitchen
- Stainless Steel Sunken Range, Microwave & Range Hood
- Upgraded High Rise Kitchen Faucet
Mountain Lodge Bedroom
- Premium Memory Foam Mattress
- Mountain Luxury Bedding (Plush Suede Bedspread w/ Accent Pillows)
- Individual Bedroom Reading Lights (Most Models)
- Underneath Cabinet Lighting (Most Models)
- Bedroom TV w/ DVD (Most Models)
Mountain Lodge Bathroom
- Undermount Metal Sink
- LG Solid Surface Top
- Upgraded Shower Head and Toilet Paper Holder
- Towel Hooks on Hardwood
- Lighted Makeup Mirror (Select Models)
- High Rise Metal Sink Faucet
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.
Manu-Facts:

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!