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    1. Home
    2. Fifth wheel trailers
    3. Keystone
    4. Montana
    5. 3781RL
    Keystone Montana 3781RL exterior

    Keystone Montana 3781RL

    Front bedroom, rear living area, dual vanity

    • Rear living area
    • Front bedroom
    • Dual vanity
    MSRP

    $130,553

    Browse inventory (27)
    Showing 2026 floor plan
    Keystone Montana 3781RL floor plan
    Showing 2026 floor plan

    Key facts

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    Find a Keystone Montana 3781RL

    See it in person or find a great deal nationwide.
    Browse inventory (27)

    Similar floor plans

    Fifth wheel trailers that share features with the Montana 3781RL, like front bedroom, fireplace and rear window.

    Grand Design Reflection 150 Series 280RS exterior

    Grand Design Reflection 150 Series 280RS

    MSRP$72,799

    18 units available

    Grand Design Reflection 150 Series 280RS floor plan
    Max weight

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    Length

    32 ft

    Sleeps

    6

    Grand Design Reflection 100 Series 28RL exterior

    Grand Design Reflection 100 Series 28RL

    Front bedroom, rear living area

    MSRP$72,191

    113 units available

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    Max weight

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    Keystone Montana High Country 281CK exterior

    Keystone Montana High Country 281CK

    MSRP$85,471

    6 units available

    Keystone Montana High Country 281CK floor plan
    Max weight

    14,250 lbs

    Length

    32 ft 2 in

    Sleeps

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    CrossRoads Cruiser Aire CR28RD exterior

    CrossRoads Cruiser Aire CR28RD

    Rear kitchen, walk-thru bath, booth dinette

    MSRP$75,860

    4 units available

    CrossRoads Cruiser Aire CR28RD floor plan

    RV Envy's expert take

    We like: Large bedroom end tables, Large rear kitchen

    Consider: Small bathroom counter, No fridge access with slides in

    Max weight

    10,199 lbs

    Length

    31 ft 7 in

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    Forest River Impression 238RLVIEW exterior

    Forest River Impression 238RLVIEW

    Rear window, l-couch, bar seating, bunk beds

    MSRP$69,164
    Forest River Impression 238RLVIEW floor plan
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    Dutchmen Astoria 260RK exterior

    Dutchmen Astoria 260RK

    MSRP$60,184

    25 units available

    Dutchmen Astoria 260RK floor plan
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    Forest River EVO Southwest F2505 exterior

    Forest River EVO Southwest F2505

    Rear living area

    MSRPTBD
    Forest River EVO Southwest F2505 floor plan
    Max weight

    11,614 lbs

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    32 ft

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    Forest River Salem Southwest FW F255RD exterior

    Forest River Salem Southwest FW F255RD

    U shaped dinette

    MSRPTBD
    Forest River Salem Southwest FW F255RD floor plan
    Max weight

    11,614 lbs

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    32 ft

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    Other Montana floor plans

    Keystone Montana 3000RE

    MSRPTBD

    1 unit available

    Keystone Montana 3000RE floor plan
    Max weight

    16,000 lbs

    Length

    35 ft 5 in

    Sleeps

    5

    Keystone Montana 3075RL

    MSRPTBD

    1 unit available

    Keystone Montana 3075RL floor plan
    Max weight

    14,455 lbs

    Length

    34 ft 8 in

    Sleeps

    6

    Keystone Montana 3100RL

    Front bedroom, rear living area, outdoor TV

    MSRPTBD

    176 units available

    Keystone Montana 3100RL floor plan
    Length

    35 ft 11 in

    Sleeps

    4

    Keystone Montana 3120

    MSRPTBD

    1 unit available

    Keystone Montana 3120 floor plan
    Max weight

    16,350 lbs

    Length

    35 ft

    Sleeps

    4

    Keystone Montana 3120RL

    Rear living, kitchen island

    MSRPTBD

    16 units available

    Keystone Montana 3120RL floor plan

    RV Envy's expert take

    We like: Great TV viewing angle, Two awnings

    Consider: Limited bedroom storage

    Max weight

    16,000 lbs

    Length

    35 ft

    Sleeps

    4

    Keystone Montana 3121RL

    Rear living room, kitchen island, master closet

    MSRP$122,318

    30 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

    Sleeps

    4

    Keystone Montana 3123RL

    Front bedroom, rear living area

    MSRP$116,693

    40 units available

    Keystone Montana 3123RL floor plan

    RV Envy's expert take

    Consider: Limited bathroom counter space

    Max weight

    16,350 lbs

    Length

    35 ft 1 in

    Sleeps

    4

    Keystone Montana 3130RE

    MSRPTBD

    6 units available

    Keystone Montana 3130RE floor plan
    Max weight

    16,353 lbs

    Length

    35 ft 2 in

    Sleeps

    4

    Keystone Montana 3160RL

    MSRPTBD

    18 units available

    Keystone Montana 3160RL floor plan
    Max weight

    16,000 lbs

    Length

    35 ft 6 in

    Sleeps

    5

    Keystone Montana 3230CK

    MSRP$96,008

    1 unit available

    Keystone Montana 3230CK floor plan
    Max weight

    16,680 lbs

    Length

    37 ft 5 in

    Sleeps

    6

    View all Montana floor plans →
    Keystone Montana 3781RL overview

    Rear living, dual vanity bath, opposing bedroom slides

    • Rear living area
    • Front bedroom
    • Dual vanity
    Keystone Montana 3781RL exterior

    Key facts

    MSRP
    $130,553
    Length
    41 ft
    Max weight
    16,695 lbs
    Sleeps
    4

    Specs

    Dimensions

    Length
    41 ft
    Height
    13 ft 4 in
    Width
    8 ft
    Slideouts
    4
    Axles
    2

    Tanks & capacities

    Fresh water
    70 gal
    Gray water
    Keystone Montana 3781RL floor plan
    MSRP
    $130,553
    Length
    41 ft
    Max weight
    16,695 lbs
    Sleeps
    4

    AI summary

    What stands out immediately about the 3781RL is how the rear living area and front bedroom layout creates real separation between sleeping and living, no tiptoeing past the couch at night. The kitchen is a serious setup: an extra-large island with solid surface countertops, a farmhouse sink, high-rise pull-down faucet, and a large pantry that actually handles a full-time lifestyle. La-Z-Boy furniture, a 5K BTU fireplace, and backlit crown molding give the rear living space a genuinely comfortable feel rather than that typical RV-generic look. The east/west Queen bed, dual vanity, and washer/dryer prep round out a floor plan that's clearly designed for people who spend real time in their rig.

    RV Envy's expert take

    We like...
    • Extra large kitchen island
    • Roomy dining area
    • Large pantry
    Things to consider...
    • Fragile pendant lights
    • Limited living area storage
    • No nightstands
    88 gal
    Black water
    49 gal

    Weight & towing

    Dry weight
    13,841 lbs
    GVWR
    16,695 lbs
    Hitch weight
    2,695 lbs
    3/4 ton truck required
    New Ford F-250, RAM 2500, Sierra 2500, or bigger

    Based on overall weight and weight directly on tow vehicle's hitch and a new model tow vehicle. Please consult with a professional.

    Accommodations

    Sleeps
    4
    Download brochure

    Available years

    202620252024202320222021
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