Chassis & Towing
14,143 lbs Dry Weight
Designed for easy towing with various vehicles.
2025 Keystone Montana 3857BR
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Floorplan Layout
Detailed floor plan showing the complete layout and dimensions
Floorplan
Complete Fifth Wheel Specifications
2025 Keystone Montana Overview
The 2025 Keystone Montana 3857BR is a spacious fifth wheel that sleeps up to 8 people, making it an ideal choice for family adventures. With a length of 41 ft and a dry weight of 14,143 lbs, this model combines comfort and functionality for your travels. Its four slides provide ample living space, while the three air conditioners ensure a comfortable atmosphere no matter the weather. Equipped with a residential refrigerator and a power awning, this fifth wheel is perfect for extended trips or weekend getaways. Experience the unmatched quality and reputation of Keystone. Schedule your tour today!
Premium Features & Highlights
Sleeps 8 for Family Comfort
41 ft Length for Spacious Living
Three Air Conditioners for Ultimate Comfort
Residential Refrigerator for Home-Like Convenience
Power Awning for Outdoor Enjoyment
Four Slides for Maximum Space
Select a category to view specs
Overview
Vehicle Identification & Details
8 specifications available
- Category
- Fifth Wheel
- Condition
- new
- Floorplan
- 3857BR
- Make
- Keystone
- Model
- Montana
- Stock Number
- RV910
- VIN
- 4YDFM0T28S4701261
- Year
- 2025
Size & Weight
Dimensions, Weight, Construction & Exterior
9 specifications available
- Dry Weight
- 14,668 lbs
- GVWR
- 17,050 lbs
- Length
- 40.92 ft
- Exterior Height
- 13.42 ft
- Awning Length Ft
- 16 ft
- Awnings Count
- 2
- Has Power Awning
- Yes
- Slides
- 4
- Hitch Weight
- 3,050 lbs
Sleeping & Layout
Beds, Layout, Living & Comfort
9 specifications available
- Bunk Beds Count
- 0
- Bunkhouse
- Yes
- King Beds Count
- 1
- Primary Bedroom Location
- Front
- Murphy Beds Count
- 0
- Private Bedroom
- Yes
- Queen Beds Count
- 1
- Sleeps
- 8
- Fireplace
- true
Kitchen & Dining
Cooking, Dining & Appliances
6 specifications available
- Outdoor Kitchen
- Yes
- Kitchen Island
- Yes
- Refrigerator Power Mode
- 12V
- Refrigerator Size
- 18
- Refrigerator Type
- residential
- Washer Dryer Prep
- Yes
Bathroom & Facilities
Comfort & Privacy
1 specifications available
- Shower Type
- Standard
Water Systems
Tanks & Plumbing
3 specifications available
- Black Water Capacity
- 49 gal
- Fresh Water Capacity
- 70 gal
- Gray Water Capacity
- 88
Power & Electrical
Electrical, Entertainment & Safety
4 specifications available
- Generator Prep
- Yes
- Solar Ready
- Yes
- Washer Dryer Prewiring
- Yes
- Backup Camera Prewiring
- Yes
Climate Control
Heating & Cooling
1 specifications available
- Air Conditioners Count
- 3
Standard Features & Equipment
Breakaway switch
GFI receptacles
Towing Hitch
Auto-Leveling
12" I-beam w/ z-frame technology, MORryde® Rubber Pin Box, 2" thick dual-layered lauan, high-gloss fiberglass sidewalls w/ double laminated & insulated rear wall, 4k Square Frameless tinted safety glass windows, MaxTurn™ front cap w/ KeyShield™ automotive-grade paint, Fully walkable roof w/ Alpha seamless TPO membrane system and 5" rafters, Rear ladder, Hydraulic slideouts on main level w/ individual switches & electric slideouts on upper deck, Insulated underbelly w/ forced hot air & electric tank heaters, 7000 lb Dexter Gladiator® thick wall axles w/ upgraded springs & Nev-R-Adjust® brakes, MORryde® CRE3000 Suspension with wet bolts, 17.5" Wheels, H-Rated Tires, H-RatedTires, TPMS Prep, 6' 6" tall 30" wide entry door w/ screen & friction hinge, 6' 4" tall 30" wide entry door w/ screen defender, friction hinge, & screen assist handle, 4 Step entry steps w/ strut assist, MORryde® Step Above® entry steps w/ strut assist, Large pass through storage w/ oversized slam latch door, Back-up camera prep, 2nd battery disconnect dedicated to residential refrigerator (inverter models), Dual battery boxes, Water connections, black tank flush, outside shower w/ quick connect hose, winterization kit, water heater bypass, power tank fill, waste & water handle valves, 110V outlet, shutoff valve, 12V compartment light, enclosed low point drains, intuitive KeyTV™ satellite/cable/ antennae source control, Seamless roto-cast holding tanks, 50 Amp electrical service w/ detachable cord & 110v exterior outlet, Outdoor kitchen, Outside shower w/ quick disconnect hose, Lippert 12V electric patio awning(s) w/ LED lights, 2nd Lippert 12V electric patio awning(s) w/ LED lights, 3000 lb towing hitch, MORryde® Safe-T-Rail door handle, Lippert Titan™ leveling system w/ touch screen and underlights, 12V distribution Giggy Box™,
Hardwood decorative slideout fascia, Reflective window shades built into window, Beauflor® vinyl flooring throughout, Hardwood decorative window frames, Hardwood cabinetry, stiles, & framing, Decorative backlit crown molding in living area, hardwood base molding in hallway and living area, 5K BTU decorative fireplace heater in Bedroom and Living Room, La-Z-Boy Furniture Package, 5K BTU decorative fireplace heater, Central vacuum,
Office / Workspace, Heat Pump, WiFi Prep, TV Hookups: 4, Large Shower, Kitchen Pantry, Private Second Bedroom,
SolarFlex™ Protect 220,
Extended-Season / 4-Season Package,
King size bed, Adjustable reading lights, USB & 110V outlets bedside, Adjustable stem reading lights w/ night light function, Foam mattress & decorative bedspread/pillow package, 40" 4K SMART TV in Bedroom, Wood TV cabinet w/ 32" SMART LCD TV,
Full extension ball bearing drawer glides, hidden cabinet hinges, Solid surface kitchen countertops, Oversized deep stainless steel sink with attachments, High-rise pull down faucet, Kitchen power vent fan w/ rain sensor, Flush floor slideout(s), Free standing legless dinette w/ leaf, 110 V outlets, luxury chairs,
Decorative vanity w/ stainless sink, Residential 30" X 48" fiberglass shower w/ decorative glass enclosure, skylight, & molded accessory/foot shelf, Porcelain foot flush toilet, Bathroom power vent fan w/ rain sensor,
Four Season Living Package, 12V heat pads on holding tanks, Astrofoil insulated slide floors & underbelly, Dual attic vents, Heated and enclosed underbelly, convenience center, & dump valves, Reflective foil insulated front cap, Tested and approved for 0° usage,
3-year limited structural warranty, 1-year limited base warranty, Color-coded unified wiring standard, 4G LTE and Wi-Fi prep, Tuf-Lok™ thermoplastic duct joiners, KeyTV™ multisource signal controller, Tru-fit™ slide construction, Blade Pure™,
(2) 40 lb LP tanks w/ auto changeover, (2) 30 lb LP tanks w/ auto changeover, 15K BTU Coleman Mach Quiet Series ducted A/C w/ heat pump main A/C, Starlink Prep, CX3 package: Triple 15K BTU A/C Package, 35K BTU furnace, 60K BTU Suburban On Demand Water Heater, 16 gal. gas or electric quick recovery water heater, 55" 4K Smart TV and JBL 2.1 Soundbar and Subwoofer, 50" Smart TV & AM/FM/USB stereo w/ JBL® Aura Mizone 3 zone volume control, 18 Cu. Ft. residential refrigerator w/ 2000w inverter, Residential size stainless steel convection microwave, 24" Furrion Stove w/ Matching stainless Steel Drawer, 24" Furrion freestanding 4-burner range with 3.7 Cu Ft Oven, Stackable washer/dryer prep, Pendant style island light w/ ceiling treatment,
* Vehicle specifications listed to the best of our knowledge. All specifications, features, and information are provided by the manufacturer. United Motorsports & RV is not responsible for manufacturer defects, specification changes, or recalls. Buyers should verify all information directly with United Motorsports & RV.
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Built to Last
Superior construction for years of adventures
Plumbing
70-Gallon Fresh Water Capacity
Allows for longer off-grid trips without frequent refills.
Plumbing
49-Gallon Black Water Capacity
Efficient waste storage for extended travels.
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from $575/mo
Estimated • 20% down
Schedule Tour
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Showroom Hours
Mon-Fri: 9 AM - 6 PM, Sat: 9 AM - 5 PM, Sun: 12 PM - 5 PM
1675 N. Broadway Lexington, KY 40505
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Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. We are not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.
$81,245
est $575/mo