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new 2026 Keystone RV Montana High Country 377FL

Fifth Wheels Stock #KE18902

2026 Keystone RV Montana High Country 377FL

Overview

Length 39 ft
Sleeps 9
Slide-Outs 4

ON SPECIAL NOW!

Welcome to a new era of elevated travel experiences with the 2026 Keystone Montana High Country. Step into a realm where every detail is meticulously crafted to enhance your journey, from the breathtaking panoramas framed by expansive windows to the innovative features like SolarFlex™ solar power systems and our exclusive Winegard Air 360+ antenna with satellite pass through that make life on the road seamless. With slightly shorter models, floorplan options designed for families, and warranty coverage for full-time travelers, High Country is a favorite for RV enthusiasts throughout North America. The Montana High Country 5th wheel trailers come with a very healthy list of Standard Features like...

  • Lippert Ground Control™ Leveling w/ Hitch Memory
  • Road Armor™ Suspension w/ 1/2” Shackle Plates, Wet Bolts & Bronze Bushings
  • Dexter® Gladiator™ Axles w/ Upgraded Springs & Nev-R-Adjust Brakes
  • Oversized Lippert G-Class Black Glass Entry Door
  • 12V Heating Pads & Furnace Heat Protection for Holding Tanks
  • 16 Gallon Gas/Electric Suburban Water Heater
  • 70 Gallon Fresh Water Tank
  • Seaflo® Water Pump, 12 Db Quieter
  • 35K BTU Dometic Furnace & Up to 16.5K BTU Heat Pump
  • Two Coleman-Mach Power-Saver Air Conditioners
  • Blade Pure™ High-Performance Airflow System w/ Merv 9 Air Filtration
  • NEW Bel-Air Vinyl Flooring by Shaw w/ 7-Year Cold Cracking Warranty
  • 18 Cu. Ft. Residential Refrigerator w/ Ice Maker (Opt. 16 Cu. Ft 12V Refrigerator)
  • 24” Furrion Stove w/ Matching Stainless Steel Drawer
  • NEW Adjustable 23” Dual-Burner Suburban Griddle in Outside Kitchens
  • Central Vacuum w/ Attachments
  • 50” Smart TV in the Living Room
  • JBL Cube Stereo w/ Mizone Control
  • JBL Exterior Speakers
  • SolarFlex™ Protect 220i, or Discover 440i Solar charging System.

The Montana High Country 377FL is nearly 41' 11" in overall length, and features a luxurious Front Living room that provides space and seating that is perfect for entertaining guests. A large entertainment center with a fireplace, and 2 hide-bed sofas ensure comfort, even if you have overnight guests. Add to that a bunk room above the Master Bedroom and the total sleeping capacity for this Montana High Country extends to 8. Options include on this 377FL include...

  • INTERIOR DECOR - ARLINGTON
  • EXTERIOR DECOR - MYSTIC WHITE
  • HIGH COUNTRY RESIDENTIAL LIVING PACKAGE
  • HIGH COUNTRY FOUR SEASON LIVING PACKAGE
  • OZARK SHADOW EDITION
  • AUTOMATIC LEVELING SYSTEM
  • SOLAR FLEX DISCOVER (440-watts w/2000-watt Inverter)
  • FREE STANDING DINETTE AND CHAIRS
  • REFRIGERATOR -12Vlt. -16cu.ft.
Full Specifications & Features

Dimensions

Length 39 ft
Height 13 ft 4 in
Width 8 ft

Capacity

Sleeps 9
Slide-Outs 4

Weights

GVWR 16,620 lbs
Cargo Capacity 3,107 lbs
Dry Weight 13,513 lbs
Hitch Weight 2,620 lbs

Tanks & Fluids

Fresh Water 75 gal
Gray Water 78 gal
Black Water 39 gal
LP Gas 14 gal

Systems

Electrical Service 50 amp
Air Conditioners 2
Furnace 35,000 BTU
Solar Panels 2

Chassis

Axles Tandem
Suspension Leaf Springs

Construction

Sidewall Fiberglass
Exterior Color White
Profile Full

Features & Amenities

  • Air Conditioning
  • Full Bath
  • Rear Bedroom
  • Bunkhouse
  • Front Living
  • Mid Kitchen
  • Washer/Dryer Prep
  • Dual Entry
  • Solar Charging
  • Solar Prep
  • Heated Enclosed Underbelly
  • Backup Camera Prep
  • Tankless Water Heater
  • Tow Package
  • Pass-Through Storage
  • Auto Level
  • Front Entertainment
  • Loft
  • Fireplace
  • Walkable Roof
  • Upgraded Suspension
  • Windshield
  • Short-Bed Compatible Pin Box

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