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    1. Home
    2. Fifth wheel trailers
    3. Keystone
    4. Montana
    5. 3900RK
    Keystone Montana 3900RK exterior

    Keystone Montana 3900RK

    Browse inventory (91)
    Keystone Montana 3900RK floor plan
    Keystone Montana 3900RK floor plan

    Key facts

    Length
    43 ft 10 in
    Sleeps
    6

    AI summary

    The Keystone Montana 3900RK is built around a rear kitchen layout that feels more like a high-end condo than a trailer, anchored by a solid surface waterfall island with four chairs, a high-rise pull-down faucet, and an oversized deep stainless sink. Hardwood cabinetry, backlit crown molding, and dual 5K BTU decorative fireplaces in both the living area and bedroom give the interior a level of finish that holds up even in full-time use. On the outside, the Montana 3900RK earns its keep with a fully walkable TPO roof, hydraulic slideouts on the main level, the Lippert Titan leveling system with a touchscreen, and a 50-amp power cord reel, making setup and breakdown far less of a chore. The optional 18 cu. ft. residential refrigerator with a 2,000W inverter and the MORryde Independent Suspension System are upgrades worth serious consideration if you're putting real miles on it.

    Find a Keystone Montana 3900RK

    See it in person or find a great deal nationwide.
    Browse inventory (91)

    Similar floor plans

    Other fifth wheel trailers floor plans (around 43 ft 10 in), similar in size and price to the Montana 3900RK.

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    Keystone Cougar 302RLS exterior

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    Keystone Cougar 307RES exterior

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    Keystone Sprinter Campfire 29BH exterior

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    No image

    Eclipse Attitude 2919SAG

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    Eclipse Attitude Platinum 2919SAG

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    Eclipse Iconic 2919CK

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    Other Montana floor plans

    Keystone Montana 3000RE

    MSRPTBD

    2 units available

    Keystone Montana 3000RE floor plan
    Max weight

    16,000 lbs

    Length

    35 ft 5 in

    Sleeps

    5

    Keystone Montana 3100RL

    MSRPTBD

    177 units available

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    35 ft 11 in

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    Keystone Montana 3120

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    Max weight

    16,350 lbs

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    Keystone Montana 3120RL

    Rear living, kitchen island

    MSRPTBD

    14 units available

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    RV Envy's expert take

    We like: Great TV viewing angle, Two awnings

    Consider: Limited bedroom storage

    Max weight

    16,000 lbs

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    35 ft

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    4

    Keystone Montana 3121RL

    Rear living room, kitchen island, master closet

    MSRP$122,318

    31 units available

    Keystone Montana 3121RL floor plan

    RV Envy's expert take

    We like: Ceiling fan, Walk-in closet

    Consider: Limited counter space, Fragile pendant lights, Limited bedroom airflow, Limited kitchen cabinets

    Max weight

    16,350 lbs

    Length

    35 ft

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    Keystone Montana 3123RL

    Front bedroom, rear living area

    MSRP$116,693

    46 units available

    Keystone Montana 3123RL floor plan

    RV Envy's expert take

    Consider: Limited bathroom counter space

    Max weight

    16,350 lbs

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    35 ft 1 in

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    Keystone Montana 3130RE

    MSRPTBD

    5 units available

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    Max weight

    16,353 lbs

    Length

    35 ft 2 in

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    4

    Keystone Montana 3160RL

    MSRPTBD

    20 units available

    Keystone Montana 3160RL floor plan
    Max weight

    16,000 lbs

    Length

    35 ft 6 in

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    Keystone Montana 3230CK

    MSRP$96,008

    4 units available

    Keystone Montana 3230CK floor plan
    Max weight

    16,680 lbs

    Length

    37 ft 5 in

    Sleeps

    6

    Keystone Montana 3231CK

    Front bedroom, rear living area, dual vanity

    MSRP$121,013

    53 units available

    Keystone Montana 3231CK floor plan

    RV Envy's expert take

    We like: Bathroom accessible with slides in, Peninsula extending countertop, Good bathroom countertop space

    Consider: Limited bathroom storage, Fragile pendant lights, Very limited living area storage

    Max weight

    16,680 lbs

    Length

    37 ft 5 in

    Sleeps

    4

    View all Montana floor plans →
    Keystone Montana 3900RK overview
    Keystone Montana 3900RK exterior

    Key facts

    Length
    43 ft 10 in
    Sleeps
    6

    Specs

    Dimensions

    Length
    43 ft 10 in
    Height
    13 ft 4 in
    Slideouts
    4
    Axles
    2

    Tanks & capacities

    Fresh water
    77 gal
    Gray water
    150 gal
    Black water
    100 gal

    Weight & towing

    Hitch weight
    3,405 lbs

    Accommodations

    Sleeps
    6
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