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Pierce RV

2026 Keystone RV Montana 3900RK

2026 Keystone RV 2026 Keystone RV Montana - image 1
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Floorplan Layout

Detailed floor plan showing the complete layout and dimensions
2026 Keystone RV Montana 3900RK floorplan
Floorplan

Complete Fifth Wheel Specifications

2026 Keystone RV Montana Overview

Introducing the 2026 Keystone Montana 3900RK, a stunning fifth wheel that exemplifies luxury and comfort. With a length of 42.3 ft, this new model offers ample space, sleeping up to 4 people, making it perfect for family adventures. Weighing in at 15,076 lbs with a GVWR of 19,200 lbs, this fifth wheel is designed for easy towing and maneuverability. Enjoy the convenience of a rear kitchen and two bathrooms, allowing for more privacy and comfort during your travels. The Montana's exceptional design and reputation make it a top choice among outdoor enthusiasts. Schedule your tour today!

Premium Features & Highlights

Spacious Interior Layout
4 Slide-Outs for Expanded Living Space
Private Bedroom for Enhanced Comfort
Dual Bathrooms for Family Convenience
Tankless Water Heater for Endless Hot Water
Select a category to view specs

Overview

Vehicle Identification & Details

8 specifications available

Category
Fifth Wheel
Condition
new
Floorplan
3900RK
Make
Keystone RV
Model
Montana
Stock Number
R-26-304
VIN
4YDFM0V20T4700992
Year
2026

Size & Weight

Dimensions, Weight, Construction & Exterior

5 specifications available

Dry Weight
15,076 lbs
GVWR
19,200 lbs
Length
42.3 ft
Awnings Count
2
Slides
4

Sleeping & Layout

Beds, Layout, Living & Comfort

7 specifications available

Available Beds
King
Bedroom Count
1
Bunk Beds Count
0
King Beds Count
1
Primary Bedroom Location
Front
Private Bedroom
Yes
Sleeps
4

Kitchen & Dining

Cooking, Dining & Appliances

8 specifications available

Kitchen Location
Rear
Oven
Yes
Stovetop Burners
4
Range Type
Convection Cooking
Refrigerator Power Mode
12V
Refrigerator Size
20 cu ft
Refrigerator Type
12V
Washer Dryer Prep
Yes

Bathroom & Facilities

Comfort & Privacy

3 specifications available

Bathroom Type
Full
Bathrooms Count
2
Shower Type
Standard

Water Systems

Tanks & Plumbing

5 specifications available

Fresh Water Capacity
70 gal
Gray Water Capacity
88
Has Tankless Water Heater
Yes
Water Heater Power Mode
On Demand
Water Heater Type
On Demand

Power & Electrical

Electrical, Entertainment & Safety

3 specifications available

Electrical Service
50 amps
Televisions Count
1
Tv Info
LR 55" 4K Smart TV

Climate Control

Heating & Cooling

2 specifications available

Ac Btu
31,500 BTU
Heater Btu
35,000 BTU

* Vehicle specifications listed to the best of our knowledge. All specifications, features, and information are provided by the manufacturer. Pierce RV is not responsible for manufacturer defects, specification changes, or recalls. Buyers should verify all information directly with Pierce RV.

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Built to Last

Superior construction for years of adventures
HVAC

35,000 BTU Powerful Furnace

Stay warm during your travels with efficient heating.

Plumbing

70-Gallon Fresh Water Capacity

Extended off-grid capability for longer trips.

Ready for Your Next Adventure?

Experience the freedom of the open road with your next RV adventure

Payment Calculator

Estimate your monthly payments

from $937/mo
Estimated • 20% down

Schedule Tour

See this RV in person at our showroom

Showroom Hours
Mon-Fri: 9AM-6PM
3800 Pierce Parkway Billings, MT 59106

Trade-In Value

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Trade Evaluation

Dealer assessment

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.
$131,394
est $927/mo