BIG FAMILY? BIG ADVENTURES? BIG COMFORT.
Meet the 2026 Keystone Montana High Country 377FL — the front-living fifth wheel that turns every trip into a destination. Now at ArrKann RV Carstairs, this luxury coach is packed with residential style, smart design, and thoughtful features your crew will actually use.
WELCOME TO THE SOCIAL HUB
Step into the ultra-spacious front living room — the heart of the 377FL. With opposing slide-outs, the floor plan opens up to reveal:
Two hide-a-bed sofas for lounging and extra sleeping space
Power theatre seating for movie-night comfort
Huge 50” LED Smart TV with a premium JBL sound system
5,500 BTU electric fireplace for ambience (and cozy warmth!)
This isn’t just a living room — it’s the place memories are made.
UP TO 10 SLEEPING SPOTS!
Whether it’s family trips, group outings, or friends joining the adventure, the 377FL delivers:
Massive loft area above the rear master — perfect for kids or extra guests
Convertible sofas + loft = sleeping capacity for up to 10 people
A KITCHEN YOU’LL WANT TO COOK IN
Meal prep is a breeze thanks to a chef-friendly design featuring:
Large residential island with seating space
Full-size refrigerator — bring the groceries, not just the snacks
24” Furrion range with oven for hearty dinners
Elegant solid surface countertops that look amazing and clean easily
PRIVATE MASTER RETREAT
When the day winds down, the rear of the coach becomes its own oasis:
King-size bed on a slide-out for maximum comfort
Huge wardrobe and storage solutions
Washer/Dryer prep — ideal for long trips or winter stays
BUILT FOR EVERY SEASON & EVERY ROAD
This Montana is ready to go the distance with:
All-Weather Insulation Package with heated & enclosed underbelly
SolarFlex 220 solar prep for extended off-grid camping
MORryde® suspension for smooth towing over bumps
MaxTurn™ front cap for confident handling on the highway
Ground Control® 6-point electric auto-leveling — pull up, press a button, and relax
COMFORT + CONVENIENCE OUTSIDE TOO
Outdoor living is just as thoughtful:
Dual electric awnings with LED lighting
Exterior speakers for backyard tunes
Dual entry doors — one to the living area, one to the bedroom
| Stock # | 18212 |
| Location | Carstairs: 729 Highfield Gate |
| Year | 2026 |
| Make | Keystone |
| Model | MONTANA |
| Condition | NEW |
| Status | AVAILABLE |
| 18212.jpg | |
| General | |
|---|---|
| Class | FIFTH WHEEL |
| Length (FT) | 41' 11" |
| Hitch Weight (LBS) | 2620 LBS |
| Dry Weight (LBS) | 13513 LBS |
| Sub Class | Front Living |
| Shop By Length | 40 and Over |
| Shop By Weight | Over10000 LBS |
| Total Fresh Water Tank Capacity (GAL) | 75 GAL |
| Total Gray Water Tank Capacity (GAL) | 78 GAL |
| Total Black Water Tank Capacity (GAL) | 39 GAL |
| Inventory Options | DRY WEIGHT:13513 LBS HITCH WEIGHT:2620 LBS GREY WATER HOLDING TANK:78 GAL BLACK WATER HOLDING TANK:39 GAL FRESH WATER HOLDING TANK:75 GAL |
| Vin | 4YDFHMU29TA740762 |
| Other Specifications | |
|---|---|
| Exterior Color | WHITE |
| Hot Deals |
|---|
BIG FAMILY? BIG ADVENTURES? BIG COMFORT.
Meet the 2026 Keystone Montana High Country 377FL — the front-living fifth wheel that turns every trip into a destination. Now at ArrKann RV Carstairs, this luxury coach is packed with residential style, smart design, and thoughtful features your crew will actually use.
WELCOME TO THE SOCIAL HUB
Step into the ultra-spacious front living room — the heart of the 377FL. With opposing slide-outs, the floor plan opens up to reveal:
Two hide-a-bed sofas for lounging and extra sleeping space
Power theatre seating for movie-night comfort
Huge 50” LED Smart TV with a premium JBL sound system
5,500 BTU electric fireplace for ambience (and cozy warmth!)
This isn’t just a living room — it’s the place memories are made.
UP TO 10 SLEEPING SPOTS!
Whether it’s family trips, group outings, or friends joining the adventure, the 377FL delivers:
Massive loft area above the rear master — perfect for kids or extra guests
Convertible sofas + loft = sleeping capacity for up to 10 people
A KITCHEN YOU’LL WANT TO COOK IN
Meal prep is a breeze thanks to a chef-friendly design featuring:
Large residential island with seating space
Full-size refrigerator — bring the groceries, not just the snacks
24” Furrion range with oven for hearty dinners
Elegant solid surface countertops that look amazing and clean easily
PRIVATE MASTER RETREAT
When the day winds down, the rear of the coach becomes its own oasis:
King-size bed on a slide-out for maximum comfort
Huge wardrobe and storage solutions
Washer/Dryer prep — ideal for long trips or winter stays
BUILT FOR EVERY SEASON & EVERY ROAD
This Montana is ready to go the distance with:
All-Weather Insulation Package with heated & enclosed underbelly
SolarFlex 220 solar prep for extended off-grid camping
MORryde® suspension for smooth towing over bumps
MaxTurn™ front cap for confident handling on the highway
Ground Control® 6-point electric auto-leveling — pull up, press a button, and relax
COMFORT + CONVENIENCE OUTSIDE TOO
Outdoor living is just as thoughtful:
Dual electric awnings with LED lighting
Exterior speakers for backyard tunes
Dual entry doors — one to the living area, one to the bedroom
Monthly payments are approximate, available to qualified buyers and are subject to credit approval. Exact payment terms are based on Credit History, and will vary by person. Estimated monthly payment terms and interest rates can be found by contacting us.
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