2026 Montana 3857BR – Bonus Room Fifth Wheel for Sale in Western States
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The 2026 Montana 3857BR is one of the most versatile luxury fifth wheels ever built, offering a bonus room, loft, and spacious rear living area designed for families, remote workers, and full-time RVers. Available now at Lakeshore RV, this model is a top choice for customers across the western states, including California, Arizona, Colorado, and Nevada, with delivery to major cities like Los Angeles, Phoenix, Denver, and Las Vegas.
Montana 3857BR Floor Plan Highlights:
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Mid-Bonus Room: Multi-purpose room with a hide-a-bed sofa and desk—ideal as a home office, guest suite, or media space.
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Loft Above Bonus Room: Perfect sleeping quarters for kids or extra guests.
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Rear Living Room: Featuring theater seating, tri-fold sofa, large entertainment center, fireplace, and panoramic windows.
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Residential Kitchen: Full-size refrigerator, island sink, convection microwave, 3-burner stove, and abundant pantry storage.
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Dining Area: Free-standing table with chairs for family meals or remote work.
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Private King Master Suite: Front bedroom with king-size bed, wardrobe, dresser, and washer/dryer prep.
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Luxury Bathroom: Dual vanity sinks, spacious glass-door shower, and linen storage.
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Multiple Slide-Outs: Expands the interior to create wide open living spaces.
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Built for Full-Time Living: Superior insulation, dual climate control, and durable construction for all-season RVing in both hot deserts and cool mountain regions.
At Lakeshore RV, we guarantee the lowest prices nationwide and fast shipping to California, Arizona, Colorado, Nevada, and all western states. Whether you’re traveling the Pacific Coast, the Rockies, or the desert Southwest, the Montana 3857BR provides comfort, flexibility, and style like no other.
Call Lakeshore RV at 1-231-740-6225 today to reserve your 2026 Montana 3857BR Fifth Wheel and start your western adventures.
We have 1 3857BR availableView InventorySpecifications
Sleeps 8 Slides 4 Length 40 ft 11 in Ext Height 13 ft 5 in Interior Color Oakmont, Woodcliff Exterior Color Volcano, Cobalt, Sterling, Glacier Full-Body Paint Choices Hitch Weight 3050 lbs Dry Weight 14668 lbs Cargo Capacity 2382 lbs Fresh Water Capacity 70 gals Grey Water Capacity 88 gals Black Water Capacity 49 gals Tire Size ST235/80R16G Furnace BTU 35000 btu Number Of Bunks 1 Available Beds King Refrigerator Type Residential w/ Ice maker Refrigerator Size 18 cu ft Convection Cooking Yes Cooktop Burners 3 Shower Size 30" x 48" Number of Awnings 2 Axle Weight 7000 lbs LP Tank Capacity 30 Water Heater Capacity 16 gal Water Heater Type Gas/Electric Quick Recovery AC BTU 45000 btu TV Info LR 50" Smart TV, BR 32" LCD TV Awning Info 10' & 16' Electric with LED Lights Axle Count 2 Number of LP Tanks 2 Shower Type Standard Electrical Service 50 amp Similar Fifth Wheel Floorplans
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Fifth Wheel
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Stock #JS3857BRMuskegon, Michigan2026 Keystone Montana 3857BR – Luxury Bunkhouse Fifth Wheel with Loft & Middle Bunk Room, Call John Sobczak 231-740-6225Stock #JS3857BRMuskegon, Michigan2026 Keystone Montana 3857BR – Luxury Bunkhouse Fifth Wheel with Loft & Middle Bunk Room, Call John Sobczak 231-740-6225
Lakeshore RV Center is not responsible for any misprints, typos, or errors found in our website pages. All prices and payments listed exclude sales tax, title, license, administrative processing, dealer prep and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us @231-788-2040 for availability as our inventory changes rapidly. All calculated payments are an estimate only, do not constitute an offer of credit, and are subject to lender approval. Advertised monthly payment is based on 20% cash down at 8.99% APR for 144 months on amounts under $25,000, at 8.99% APR for 180 months on amounts from $25k to $50,000, at 8.49% for 240 months on amounts from $50k to $150,000, and at 7.99% APR on amounts over $150k. Estimated Michigan Sales Tax, title, license/registration, admin fee, freight and dealer prep are included in calculated payment. Actual loan terms will vary depending on your specific credit situation. Advertised sale price is applicable only with indirect finance contract arranged by dealership.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.

