2026 Keystone Montana High Country 377FL

NewFifth wheel|Stock #N5M0027|Located at D&D RV Center in Helena, MT
$79,999$115,925
Save $35,926

SALE!  WAS $86,947 BUT NOW IS ON SALE FOR $79,999 THROUGH 7-31-26!

INCLUDES 2 RV DEEP CYCLE BATTERIES-UPGRADE TO TWO 100 AMP BATTLE BORN HEATED LITHIUM SMART BATTERIES AND THE SMART HUB MONITOR FOR $2,499!

INCLUDES SOLAR FLEX DISCOVER 440 WATT SOLAR/INVERTER PACKAGE!

This Keystone Montana High Country fifth wheel 377FL includes these options:

  • Arlington Interior Decor

  • 2 RV Deep Cycle Batteries-Lithium Upgrade Available!

  • $350 In Store Parts Credit

  • Camper College Orientation

  • 1 Year Route 66 RV Club Membership

24/7 Tech Assistance

  • 10% Parts Discount At All Route 66 Locations

  • 10% Camping Discount At KOA

  • Upgrade To The RV Club Unlimited For Only $219.95!

  • Ozark Shadow Edition

  • Solar Flex Discover 440 Watt Solar/Inverter Package

  • 16 Cubic Foot 12 Volt Fridge

  • Free Standing Dinette & Chairs

  • Automatic Leveling System

  • Unique Dual Entry

  • Loft Over Bedroom

  • Rear Private Bedroom

  • Four Slides

  • Patent-Pending Windshield

Include all of your favorite people on your next adventure in this Montana High Country fifth wheel! Not only is there a rear private bedroom with a king-size bed for you, but there is also a loft above with stairs that take you to the bunk mats. Now your kids will have their own space too. You can even host a few other travelers up front in the separate living room on the two hide-a-bed sofas. This area will be perfect for cozy sleeping because of the fireplace, and you can even watch a movie as you drift off to sleep because of the 50" LCD TV too. The full bathroom has a pivot-hinge door and a 48" x 30" shower with seat, and the kitchen has a** breakfast bar** that you can sit at to eat your cereal each morning

Live the high life with a Keystone Montana High Country fifth wheel! You'll have all the luxury you need with these units. They come with a Road Armor shock absorbing hitch pin, a MaxTurn front cap with KeyShield automotive-grade paint, a fully walkable roof with Alpha seamless TPO membrane system, and an insulated underbelly with forced hot air and electric tank heaters. The Road Armor suspension has 360° vibration control for a smooth ride, and the Ground Control four-point electric auto-leveling with hitch memory will make set-up quite easy. The interior is elegantly appointed with the Thomas Payne Collection furniture, hardwood decorative slide-out fascia, Beauflor vinyl throughout with Syntec woven flooring in main slide outs, accent crown molding, and Sandstone Maple cabinetry.

Specifications

Length

41 ft 11 in

Sleeps

10 people

Slideouts

4

Unit features & options

  • 12" I-Beam frame (model specific)
  • 10" I-Beam w/z-frame technology (model specific)
  • Curt helux Pinbox (model specific)
  • MORryde Rubber pin box (model specific)
  • 2" sidewall w/dual layered lauan, high gloss fiberglass, double laminated and insulated rear wall (model specific)
  • 2" thick composite backed high gloss fiberglass sidewalls and insulated rear wall
  • Tinted safety glass windows
  • Dual pane frameless windows w/ safety tint (optional)
  • Fiberglass front cap w/ KeyShield automotive-grade paint (model specific)
  • MaxTurn front cap w/KeyShield automotive-grade paint (model specific)
  • Fully walkable roof w/ Alpha seamless TPO membrane system
  • Rear ladder
  • Hydraulic slideouts on main level w/ individual switches & electric slideouts on upper deck (model specific)
  • Electric slideouts throughout
  • Insulated underbelly w/ forced hot air & electric tank heaters
  • 8,000 LB. Curt Slipper Roller Axles Suspension (model specific)
  • 7000 LB Curt Sipper Spring Axle Suspension (model specific)
  • 7000 lb. Dexter Gladiator thick wall axles w/ upgraded springs & Nev-R-Adjust brakes (model specific)
  • H-range Rainier ST235/80R16H tires
  • Spare tire
  • Lippert Titan leveling system w/ touch screen and underlights (model specific)
  • Ground Control 4-point electric auto-leveling w/hitch memory (model specific)
  • Ground Control 6-point electric auto-leveling w/hitch memory (model specific)
  • 6' 6" tall 30" wide entry door w/ friction hinge & screen assist handle (6' 4" on select models)

Full specifications

AC BTU15000 btu
Available BedsKing
Awning Info19' Electric with LED Lights
Axle Count2
Axle Weight7000 lbs
Black Water Capacity39 gals
Cargo Capacity3107 lbs
Cooktop Burners3
Dry Weight13890 lbs
Electrical Service50 amp
Ext Height13 ft 4 in
Ext Width8 ft
Fresh Water Capacity75 gals
Furnace BTU35000 btu
Grey Water Capacity78 gals
Hitch Weight2620 lbs
Interior ColorArlington
LP Tank Capacity30 lbs
Length41 ft 11 in
Number of Awnings1 ft
Number of LP Tanks2
Refrigerator Size16 cu ft
Refrigerator Type12 Volt
Shower Size48" x 30"
Shower TypeShower w/Seat
Sleeps8
Slides4
Solar Wattage440 watts
TV InfoLR 50" LCD TV
Tire SizeST235/80R16G
Washer/Dryer AvailableYes
Water Heater TypeOn Demand

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2026 Montana High Country 377FL

2026 Montana High Country 377FL
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