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New 2026 Keystone RV Montana 3900RK

Name: D & D RV center LLC
Address: 806 Stanley St., Helena, MT, 59601, US
Telephone: 406-442-8542
Price range: $$

Fifth Wheel

Stock #N5M0988

Helena, MT

***THIS RV IS ON ORDER***EXPECTED TO ARRIVE MID JUNE 2026***RESERVE IT NOW!

1 of 18

+18

YOUR PRICE: $129,995
MSRP: $167,000
YOU $AVE: $37,005

Payments From: $869 /mo.

Sleeps 4
4 slides

Front Bath

Bath and a Half

See All Specs

Specifications

Sleeps	4	Slides	4
Interior Color	Oakmont	Furnace BTU	35000 btu
Available Beds	King	Refrigerator Type	12V
Refrigerator Size	20 cu ft	Convection Cooking	Yes
Cooktop Burners	4	Shower Size	30" x 48"
Number of Awnings	2	LP Tank Capacity	20 lbs
Water Heater Type	On Demand	AC BTU	41000 btu
TV Info	LR 55" 4K Smart TV	Awning Info	14' and 18' Lippert 12V Electric w/LED Lights
Axle Count	2	Washer/Dryer Available	Yes
Number of LP Tanks	2	Shower Type	Standard
Solar Wattage	880 watts

Description

***THIS RV IS ON ORDER***EXPECTED TO ARRIVE MID JUNE 2026***RESERVE IT NOW!

BETTER THAN BRINKLEY, SWEETER THAN SOLITUDE-THIS IS THE ALL NEW MONTANA!

INCLUDES 880 WATTS OF SOLAR!

Includes 2 RV Deep Cycle Batteries-Upgrade To 2 Battle Born Heated 100 Amp Lithium Batteries For $1,999! Larger Lithium Upgrades Also Available!

This Keystone Montana fifth wheel 3900RK includes these options:

Oakmont Interior
2 RV Deep Cycle Batteries-Upgrade To 2 Battle Born Heated 100 Amp Lithium Batteries For $1,999! Larger Lithium Upgrades Also Available!
$350 In Store Parts Credit
Camper College Orientation
1 Year Route 66 RV Club Membership
- 24/7 Tech Assistance
- 10% Parts Discount At All Route 66 Locations
- 10% Camping Discounts At KOA
- Upgrade To The RV Club Unlimited For Only $219!
Solar Flex 880i-880 Watts Of Solar/2000 Watt Inverter
Washer & Dryer
TCS Suspension With 8K Axles
ABS Braking System
Helux Pin Box
H Range Tires
Triple Air Conditioner Package
6 Point Hydraulic Auto Leveling System
12 Volt 20 Cubic Foot Fridge
Rear Kitchen
Dual Bath Sinks
Exterior Pull-Out TV
Bar with Wine Refrigerator

It will be so easy to enjoy trips in this spacious fifth wheel! There are four slides found throughout, giving your crew plenty of space to stretch out and relax. You can prepare your best meals in the rear kitchen that includes a four-burner range, convection microwave, dishwasher prep, and multiple overhead cabinets for storage. There is a pull-out dinette for dining space, along with an L-shaped sofa and a bar with a wine refrigerator to entertain guests. The middle half bath features washer/dryer prep and storage, making this space the perfect mud room that is just steps away from the main entry door. The spacious master bedroom includes a king bed slide out, a bedroom fireplace and a dresser with a TV, plus a large front bath with dual bah sinks and a master closet! Outside, two power awnings, dual pull-out storage trays, and a pull-out TV makes the exterior just as accommodating as the interior!

Enjoy luxury, innovation, and the outdoors in any one of Montana's finest fifth wheels. Each set the standard with exceptional features, and exciting factory installed options to provide you a great home on the road. Keystone's 12" I-beam chassis with z-frame technology provides a strong and durable foundation to your fifth wheel, and the four-season living package will help extend your camping season. There are also square frameless windows outside, along with storage solutions, and a hydraulic leveling system that will have you set up in no-time! Inside, you'll love the hardwood cabinetry, solid surface countertops, spacious showers, and cozy bedrooms!

Features

Standard Features (2026)

PLEASE NOTE: Features and options separated by models below

-------------------------------------------------------------------

3100RL, 3800FL, 3900RK

Exterior

12" I-beam w/ z-frame technology
Helux Pin Box
2" thick composite backed high gloss fiberglass sidewalls and insulated rear wall
4k Square Frameless tinted safety glass windows
Dual pane frameless windows w/ safety tint (optional)
Fiberglass 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
Curt TCS (Touring Coil Spring) 8K Axles
Curt ABS (Anti-Lock Braking System)
17.5" Wheels
H-Rated Tires
TPMS Prep
6' 6" tall 30" wide entry door w/ screen & friction hinge
4 Step entry steps w/ strut assist
Large pass-through storage w/ oversized slam latch door
Premium oversized steel slide out storage tray
Slide Out rear Gear Storage Trays.
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
Generator prep (optional)
RVMP Flex Power 5500 Generator (optional)
LP generator (optional; select models)
Seamless roto-cast holding tanks
50 Amp Power Cord Reel
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
Slide-out awning package (optional)
3000 lb. towing hitch
MORryde® Independent Suspension System (optional)
MORryde® Safe-T-Rail door handle
Lippert Titan™ leveling system w/ touch screen and underlights
12V distribution Giggy Box™
Frontier Gold full body paint (optional)

Interior

Hardwood decorative slideout fascia
Reflective window shades built into window
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
SBC V-Flow Max Cordless Vacuum

Keystone Exclusives

Color-coded unified wiring standard
4G LTE and Wi-Fi prep
Tuf-Lok™ thermoplastic duct joiners
KeyTV™ multisource signal controller
In-floor heating ducts
Tru-fit™ slide construction
Blade Pure™

Kitchen Features

Full extension ball bearing drawer glides, hidden cabinet hinges
Solid Surface Backsplash
Solid surface kitchen countertops
Solid Surface waterfall island
Oversized deep stainless-steel sink with attachments
High-rise pull down faucet
Adjustable Sliding "Deskette" w/ 4 chairs
Flush floor slideout(s)

Appliances & Utilities

(2) 40 lb. LP tanks w/ auto changeover
18K Furrion Chill Cube Main A/C with heat pump
13.5 K Furrion AC for 2nd and 3rd ACs
Starlink Prep
35K BTU furnace
60K BTU Suburban on Demand Water Heater
55" 4K Smart TV and JBL 2.1 Soundbar and Subwoofer
20 Cu. Ft. 12V refrigerator
18 Cu. Ft. residential refrigerator w/ 2000w inverter (optional)
Residential size stainless steel convection microwave
24" Furrion freestanding 4-burner range with 3.7 Cu Ft Oven
Stackable washer/dryer prep
Pendant style island light w/ ceiling treatment

Bedroom Features

60" x 80" full size queen bed (Optional)
King size bed
Adjustable stem reading lights
USB & 110V outlets bedside
Foam mattress & decorative bedspread/pillow package
40" 4K Smart TV in Bedroom
Built In jewelry center with hamper

Bathroom Features

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

Weather Protection

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

Safety

Breakaway switch
GFI receptacles
CO detector
Smoke detector
Propane gas leak detector
Fire extinguisher

Legacy Edition Package (Optional)

Furrion Vision S side & rear observation system
Electric power cord reel
Electric dump valves

----------------------------------------------------------------------

Dealer Stock Only Models: 3123RL, 3231CK, 3531RE, 3532SP, 3623EB, 3761FL, 3781RL, 3795FK, 3857BR, 3901RK, 3915TB, 3941FO

Features may vary by model; see dealer for more details

Exterior

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
Dual pane frameless windows w/ safety tint (optional)
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 (8,000 lb. axles on select models)
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
Generator prep (optional)
LP generator (optional)
Seamless roto-cast holding tanks
50 Amp electrical service w/ detachable cord & 110v exterior outlet
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
Slide-out awning package (optional)
3000 lb towing hitch
MORryde® Independent Suspension System (optional)
MORryde® Safe-T-Rail door handle
Lippert Titan™ leveling system w/ touch screen and underlights
12V distribution Giggy Box™
Volcano full body paint (optional)
Cobalt full body paint (optional)
Sterling full body paint (optional)
Glacier full body paint (optional)

Interior

Hardwood decorative slideout fascia
Reflective window shades built into window
Hardwood decorative window frames
Beauflor® vinyl flooring throughout
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

Keystone Exclusives

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™

Kitchen

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

Appliances & Utilities

(2) 40 lb LP tanks w/ auto changeover (select models)
(2) 30 lb LP tanks w/ auto changeover (select models)
Starlink Prep
15K BTU Coleman Mach Quiet Series ducted A/C w/ heat pump main A/C
35K BTU furnace
CX3 package: Triple 15K BTU A/C Package
60K BTU Suburban on Demand Water Heater
55" 4K Smart TV and JBL 2.1 Soundbar and Subwoofer
16 gal. gas or electric quick recovery water heater
50" Smart TV & AM/FM/USB stereo w/ JBL® Aura Mizone 3 zone volume control
20 Cu. Ft. 12V refrigerator (optional)
18 Cu. Ft. residential refrigerator w/ 2000w inverter
Residential size stainless steel convection microwave
24" Furrion freestanding 4-burner range with 3.7 Cu Ft Oven
Stackable washer/dryer prep
24" Furrion Stove w/ Matching stainless Steel Drawer
Pendant style island light w/ ceiling treatment (select models)

Bedroom

60" x 80" full size queen bed (optional)
King size bed
Adjustable reading lights
USB & 110V outlets bedside
Foam mattress & decorative bedspread/pillow package
Adjustable stem reading lights w/ night light function
40" 4K SMART TV in Bedroom
Wood TV cabinet w/ 32" SMART LCD TV

Bathroom

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

Weather Protection

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

Safety

Breakaway switch
GFI receptacles
CO detector
Smoke detector
Propane gas leak detector
Fire extinguisher

Legacy Edition Package (optional)

Furrion Vision S side & rear observation system
Dexter® disc brakes
Electric power cord reel
Surge protector
Winegard 4G gateway router
Rear fiberglass cap
Electric Dump Valves
Starlink Standard Kit w/ panel installed on roof

See us for a complete list of features and available options!

All standard features and specifications are subject to change.

All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.

Due to the current environment, our features and options are subject to change due to material availability.

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406-442-8542
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D&D RV Center, LLC is not responsible for any misprints, typos, or errors found in our website pages. Any price listed has no other surprise fees or charges added to it (bet you didn't expect that!). Manufacturer specifications and features may be used. We take pictures of each individual unit in our inventory. We use manufacturer videos and virtual tours on our website. Please contact us @406-442-8542 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.

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.

New 2026 Keystone RV Montana 3900RK

3900RK Floorplan

Specifications

Description

Features