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We do our best to keep listing details accurate, but pricing, specifications, and availability come from third-party sources and can change without notice. We can't guarantee accuracy, so please confirm the details with the dealer before making any decisions. See something inaccurate? Contact us.

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    1. Home
    2. Inventory
    3. Campers Inn RV
    4. Knoxville, TN
    5. 2026 Keystone Avalanche 366LS

    2026 Keystone Avalanche 366LS

    NewFifth wheel|Stock #21173928|Located at Campers Inn RV in Knoxville, TN
    $72,977$109,339
    Save $36,362
    RV Envy

    2026 Keystone Avalanche 366LS

    New · Fifth wheel

    $72,977$109,339Save $36,362

    Campers Inn RV – Knoxville

    835 Huckleberry Springs Rd

    Knoxville, TN 37924

    (865) 933-7213

    Stock #21173928

    2026 Keystone Avalanche 366LS floor plan

    Specifications

    Length40 ft 10 in
    Dry weight14,027 lbs
    Sleeps5 people
    Slideouts5

    Full specifications

    AC BTU30000 btu
    Available BedsKing
    Awning Info9' and 16' Power Carefree w/Adjustable Arms
    Axle Count2
    Axle Weight7000 lbs
    Black Water Capacity49 gals
    Cargo Capacity2173 lbs
    Cooktop Burners3
    Dry Weight14027 lbs
    Electrical Service50 amp
    Ext Height13 ft 4 in
    Ext Width8 ft 4 in
    Exterior ColorWHITE FOG
    Fresh Water Capacity75 gals
    Furnace BTU35000 btu
    Grey Water Capacity83 gals
    Hitch Weight2365 lbs
    Interior ColorDOVETAIL
    LP Tank Capacity30 lbs.
    Length40 ft 10 in
    Number of Awnings2
    Number of LP Tanks2
    Refrigerator Size18 cu ft
    Refrigerator TypeResidential
    Shower TypeShower w/Seat
    Sleeps5
    Slides5
    TV InfoLR 65" TV
    Tire SizeST235/80R16G
    Washer/Dryer AvailableYes

    Options and equipment may differ from those listed. We do our best to ensure accuracy, but please confirm all details with the dealer before purchase.

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    2026 Avalanche 366LS

    2026 Avalanche 366LS
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    Dealer information

    Campers Inn RV – Knoxville

    835 Huckleberry Springs Rd
    Knoxville, TN 37924
    (865) 933-7213

    New 2026 Keystone RV Avalanche 366LS

    The 2026 Keystone RV Avalanche 366LS is designed for travelers who want a spacious, comfortable fifth wheel with a residential feel. The rear kitchen creates a dedicated cooking and gathering space, while the open central living area and private front bedroom make this floorplan ideal for relaxing during extended stays or weekend getaways.

    The rear kitchen features a large island, generous counter space, pantry storage, and a residential-style layout that gives you plenty of room to prepare meals. In the living area, the large L-shaped sofa provides plenty of comfortable seating, while the Hide-A-Bed sofa offers additional sleeping space. A desk gives you a dedicated place to work or handle everyday tasks, and the free-standing dinette creates a comfortable spot for meals.

    The private front bedroom features a 70" x 80" king bed, dresser, and storage underneath. Washer/dryer prep adds convenience for longer trips, while the ceiling fan helps keep the living area comfortable. With its spacious kitchen, flexible living area, dedicated workspace, and residential-style bedroom, the Avalanche 366LS is built to make life on the road feel more like home.

    KEY FEATURES & HIGHLIGHTS

    • Rear Kitchen with Island

    • 70" x 80" King Bed

    • Large L-Shaped Sofa

    • Hide-A-Bed Sofa Sleeper

    • Dedicated Desk

    • Free-Standing Dinette

    • Washer/Dryer Prep

    • Ceiling Fan

    WHY BUY FROM CAMPERS INN RV?

    At Campers Inn RV, our RV Match Makers are dedicated to helping you find the right RV for your adventures. From knowledgeable product specialists and financing options to expert service after the sale, we're here to help make your RV ownership experience enjoyable from start to finish.

    SEE IT IN PERSON

    Come experience the New 2026 Keystone RV Avalanche 366LS and see how its spacious rear kitchen, comfortable living area, and residential-style amenities can make your next adventure feel like home. Appointments Available! Call Or Text 865-933-7213 today to schedule your personal tour!

    Options:

    • Base Camp Package

    • Dual 15k A/C Package

    • 6 Point Hydraulic Auto Leveling

    • Solar Flex Protect

    • Road Armor Pin Box

    • Residential Refrigerator

    • RVIA Seal

    New 2026 Keystone RV Avalanche 366LS

    The 2026 Keystone RV Avalanche 366LS is designed for travelers who want a spacious, comfortable fifth wheel with a residential feel. The rear kitchen creates a dedicated cooking and gathering space, while the open central living area and private front bedroom make this floorplan ideal for relaxing during extended stays or weekend getaways.

    The rear kitchen features a large island, generous counter space, pantry storage, and a residential-style layout that gives you plenty of room to prepare meals. In the living area, the large L-shaped sofa provides plenty of comfortable seating, while the Hide-A-Bed sofa offers additional sleeping space. A desk gives you a dedicated place to work or handle everyday tasks, and the free-standing dinette creates a comfortable spot for meals.

    The private front bedroom features a 70" x 80" king bed, dresser, and storage underneath. Washer/dryer prep adds convenience for longer trips, while the ceiling fan helps keep the living area comfortable. With its spacious kitchen, flexible living area, dedicated workspace, and residential-style bedroom, the Avalanche 366LS is built to make life on the road feel more like home.

    KEY FEATURES & HIGHLIGHTS

    • Rear Kitchen with Island

    • 70" x 80" King Bed

    • Large L-Shaped Sofa

    • Hide-A-Bed Sofa Sleeper

    • Dedicated Desk

    • Free-Standing Dinette

    • Washer/Dryer Prep

    • Ceiling Fan

    WHY BUY FROM CAMPERS INN RV?

    At Campers Inn RV, our RV Match Makers are dedicated to helping you find the right RV for your adventures. From knowledgeable product specialists and financing options to expert service after the sale, we're here to help make your RV ownership experience enjoyable from start to finish.

    SEE IT IN PERSON

    Come experience the New 2026 Keystone RV Avalanche 366LS and see how its spacious rear kitchen, comfortable living area, and residential-style amenities can make your next adventure feel like home. Appointments Available! Call Or Text 865-933-7213 today to schedule your personal tour!

    Options:

    • Base Camp Package

    • Dual 15k A/C Package

    • 6 Point Hydraulic Auto Leveling

    • Solar Flex Protect

    • Road Armor Pin Box

    • Residential Refrigerator

    • RVIA Seal

    Specifications

    Length

    40 ft 10 in

    Dry weight

    14,027 lbs

    Sleeps

    5 people

    Slideouts

    5

    Specifications

    Length

    40 ft 10 in

    Dry weight

    14,027 lbs

    Sleeps

    5 people

    Slideouts

    5

    Full specifications

    As provided in the original listing

    AC BTU30000 btu
    Available BedsKing
    Awning Info9' and 16' Power Carefree w/Adjustable Arms
    Axle Count2
    Axle Weight7000 lbs
    Black Water Capacity49 gals
    Cargo Capacity2173 lbs
    Cooktop Burners3
    Dry Weight14027 lbs
    Electrical Service50 amp
    Ext Height13 ft 4 in
    Ext Width8 ft 4 in
    Exterior ColorWHITE FOG
    Fresh Water Capacity75 gals
    Furnace BTU35000 btu
    Grey Water Capacity83 gals
    Hitch Weight2365 lbs
    Interior ColorDOVETAIL
    LP Tank Capacity30 lbs.
    Length40 ft 10 in
    Number of Awnings2
    Number of LP Tanks2
    Refrigerator Size18 cu ft
    Refrigerator TypeResidential
    Shower TypeShower w/Seat
    Sleeps5
    Slides5
    TV InfoLR 65" TV
    Tire SizeST235/80R16G
    Washer/Dryer AvailableYes

    Full specifications

    As provided in the original listing

    AC BTU30000 btu
    Available BedsKing
    Awning Info9' and 16' Power Carefree w/Adjustable Arms
    Axle Count2
    Axle Weight7000 lbs
    Black Water Capacity49 gals
    Cargo Capacity2173 lbs
    Cooktop Burners3
    Dry Weight14027 lbs
    Electrical Service50 amp
    Ext Height13 ft 4 in
    Ext Width8 ft 4 in
    Exterior ColorWHITE FOG
    Fresh Water Capacity75 gals
    Furnace BTU35000 btu
    Grey Water Capacity83 gals
    Hitch Weight2365 lbs
    Interior ColorDOVETAIL
    LP Tank Capacity30 lbs.
    Length40 ft 10 in
    Number of Awnings2
    Number of LP Tanks2
    Refrigerator Size18 cu ft
    Refrigerator TypeResidential
    Shower TypeShower w/Seat
    Sleeps5
    Slides5
    TV InfoLR 65" TV
    Tire SizeST235/80R16G
    Washer/Dryer AvailableYes

    Price history

    Days listed

    281

    Price drops

    2

    Total price reduction

    -$15,018

    Sign in to see 3 price changes

    Price history

    Days listed

    281

    Price drops

    2

    Total price reduction

    -$15,018

    Sign in to see 3 price changes