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New 2026 Keystone Montana 3900RK

Fifth Wheel|Birch Run, MI| Stock# 357527

MSRP: $162,751

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Overview
Specifications

The Keystone Montana 3900RK luxury fifth wheel is designed to bring residential comfort and upscale amenities wherever your travels take you! The spacious rear kitchen features abundant counter space, premium appliances, a large pantry, residential refrigerator, convection microwave, and a pull-out dinette, making every meal feel like home. In the living area, you’ll enjoy an L-shaped sofa, entertainment center with a 55" 4K Smart TV, fireplace, and panoramic windows for incredible views at every destination. There’s even an exterior pull-out TV so you can relax outdoors while enjoying the big game or your favorite movie.

The front master suite offers a true retreat with a king bed, ample wardrobe storage, washer/dryer prep, and even a cozy bedroom fireplace. A spacious full bath with dual sinks and a large residential-style shower provides added convenience, while the mid-coach half bath is perfect for guests. With four slide-outs, dual power awnings, heated and insulated underbelly, hydraulic leveling system, and available solar packages, the Montana 3900RK is built for extended stays and full-time comfort in every season.

When it comes to luxury fifth wheels, the Montana lineup continues to impress with residential-inspired design, premium construction, and modern technology throughout. Features like frameless tinted windows, tank heaters, upgraded suspension options, high-capacity climate control systems, and advanced towing stability help create a smooth and comfortable travel experience. Whether you’re planning weekend getaways or full-time adventures, the Keystone Montana 3900RK delivers the perfect combination of luxury, storage, entertainment, and four-season capability for life on the road.

Overview

The Keystone Montana 3900RK luxury fifth wheel is designed to bring residential comfort and upscale amenities wherever your travels take you! The spacious rear kitchen features abundant counter space, premium appliances, a large pantry, residential refrigerator, convection microwave, and a pull-out dinette, making every meal feel like home. In the living area, you’ll enjoy an L-shaped sofa, entertainment center with a 55" 4K Smart TV, fireplace, and panoramic windows for incredible views at every destination. There’s even an exterior pull-out TV so you can relax outdoors while enjoying the big game or your favorite movie.

The front master suite offers a true retreat with a king bed, ample wardrobe storage, washer/dryer prep, and even a cozy bedroom fireplace. A spacious full bath with dual sinks and a large residential-style shower provides added convenience, while the mid-coach half bath is perfect for guests. With four slide-outs, dual power awnings, heated and insulated underbelly, hydraulic leveling system, and available solar packages, the Montana 3900RK is built for extended stays and full-time comfort in every season.

When it comes to luxury fifth wheels, the Montana lineup continues to impress with residential-inspired design, premium construction, and modern technology throughout. Features like frameless tinted windows, tank heaters, upgraded suspension options, high-capacity climate control systems, and advanced towing stability help create a smooth and comfortable travel experience. Whether you’re planning weekend getaways or full-time adventures, the Keystone Montana 3900RK delivers the perfect combination of luxury, storage, entertainment, and four-season capability for life on the road.

Specifications

Specifications

RV Details

  • Sleeps6
  • Slides4
  • Length42 ft. 4 in.
  • Width8 ft.
  • Height13 ft. 5 in.
  • Dry Weight17130 lbs.
  • Hitch Weight2975 lbs.
  • GVWR16975 lbs.
  • VIN4YDFM0V27T4700990

Tanks & HVAC

  • Fresh Water1 Tank(s) | 70 gal.
  • Black Water2 Tank(s) | 88 gal.
  • Gray Water2 Tank(s) | 88 gal.
  • Propane2 Tank(s) | 40 gal.
  • ACautomatic
  • Heat35000 BTU
  • Water Heatertankless
  • Electrical0 amps
  • GeneratorGenerator Prep Available

Appliances

  • Awnings2 | 2 Power Awnings
  • Beds2
  • Showerwalk_in_shower 30" x 48" in.
  • Refrigeratorfullsize
  • Cooktops | Microwave3 | Yes
  • Washer/Dryer PreppedYes
  • Axles | Tire Size17.5

Can you tow this RV?

Understanding your vehicle's towing capacity rating is critical to choosing the right RV for you and your family. Towing your next RV safely down the road will depend on having the right tow vehicle and RV combination. Use our handy towing guide below to help find your vehicle's towing capacity and filter our RV inventory down to RVs you can tow. View Tow Guide >

Attention: Your vehicle's max towing capacity includes passenger weight, added accessories, any current liquids in tanks, and any cargo you've added such as food, clothes, chairs, grills, games, tools, etc.. For purposes of RVs I can Tow, we've allowed 1000 lbs for RVs over 8000 lbs, 750 lbs for RVs under 8000 lbs, and 500 lbs for RVs under 5000 lbs for average Cargo Weight. Always confirm your specific tow vehicles towing capacity directly from your vehicle's manufacturer before purchasing or towing an RV. You are responsible for the decision to operate your vehicle and any RV you may tow. If your specific vehicle is not listed, please contact us for assistance.

General RV works hard to ensure the accuracy of all its listings however we are not responsible for any misprints, typos, or errors found in our website pages. Manufacturer-provided pictures, specifications and features may be used as needed. Inventory shown may be only a partial listing of the entire inventory. Please contact us at 888-436-7578 for availability as our inventory changes rapidly.

*All RV prices exclude tax, title, registration and fees, including documentary service fees. All payments are with approved credit through dealer lending source. Advertised monthly payment is based on 20% cash down, plus tax, title, registration and fees, at 7.99% APR for 96 months on finance amounts under $10K, at 7.99% APR for 144 months on finance amounts from $10K to $25K, at 7.99% APR for 180 months on finance amounts from $25K to $50K, and at 7.99% APR for 240 months on amounts over $50K. $79 monthly payment based on purchase price of $9,999 with 20% down at 8.24% APR for 218 months. $439 monthly payment based on purchase price of $69,995 with 20% down, at 6.49% APR for 240 months. For select models only. Rate and payments are subject to change at any time. Conditions apply. See dealer for details.