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2026 Keystone Avalanche 366LS
NewStock #107815
Listing price
2026 Avalanche 366LS
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
The Keystone Avalanche 366LS puts the kitchen at the back where it belongs in a layout this size, opening up the living area and giving the whole rig a roomy, residential feel. The 100" wide body construction and 6'10" tall summit slides make a real difference day-to-day, and details like a Girard on-demand tankless water heater, solid surface countertops, and a Furrion refrigerator with ice maker push it firmly into the full-timer category. A King bed, dual Coleman-Mach 15K BTU air conditioners, and the Polar Pack four-season climate package mean the Avalanche 366LS is set up for comfort in more than just mild weather. The Lippert Titan hydraulic auto-leveling system with its digital touchscreen takes the headache out of setup, and stackable washer and dryer prep keeps long-term convenience on the table.
Length
40 ft 10 in
Dry weight
14,027 lbs
Sleeps
5
Slideouts
5
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
$69,997 – $84,995
This unit is ranked 1 of 4 by asking price in this group.
The listing price on this unit has changed 14 times.
See the complete price timeline and the rest of this unit's pricing insights.
Campers Inn RV
Conway, SC
Compared with 1,114 dealers nationwide
New 2026 Keystone Avalanche 366LS Rear Kitchen Fifth Wheel for Sale in Conway, SC
The 2026 Keystone Alpine Avalanche Edition 366LS is a five-slide rear kitchen fifth wheel with a front king bedroom, walk-through bathroom, and a desk with a chair for working from the road. Black Steel full body paint gives it an upscale look at the campground.
Front master bedroom with king bed slide, dresser, and large closet with stackable washer/dryer prep
Walk-through dual entry bathroom with shower seat
Dual opposing slides with large L-shaped sofa with recliners and hide-a-bed sofa sleeper
Desk with a chair
Free-standing dinette
Rear kitchen with 18 cu. ft. residential refrigerator, center island, and large pantry
65" living room TV
Two A/C units
Polar Pack All Season Protection with heated, enclosed underbelly
Astro foil reflective insulation and static attic vents
In-floor heating ducts
Wide-body construction and Tru-Fit slides
Dual Carefree power awnings
KeyTV multisource signal controller
Length: 40' 10"
Exterior height: 13' 4"
Sleeps: 5
Slide-outs: 5
Dry weight: 14,027 lbs
Hitch weight: 2,365 lbs
Cargo capacity: 2,173 lbs
Fresh / grey / black water: 75 / 83 / 49 gallons
Furnace: 35,000 BTU
Refrigerator: 18 cu. ft. Residential
Awning: 9' and 16' Power Carefree w/Adjustable Arms
Electrical: 50 amp
Tandem axle with ST235/80R16G tires
Air conditioning: two A/C units
Other listings for this floor plan, ranked by condition, model year, distance, price, and listing quality.
Five slides, a king suite, and space to work make the 366LS ready for extended stays. Visit Campers Inn RV in Conway, SC, just a short drive from Myrtle Beach, or call 843-428-8080 to schedule a walkthrough of this fifth wheel and get your best price.
Disclaimer: Contact us today to confirm availability, features, and options. Specifications are subject to change without notice.
