Keystone Alpine Avalanche Edition fifth wheel 366LS highlights:
Five Slides King Bed Free-Standing Dinette Largest L-Shaped Sofa Desk with a Chair
This rear kitchen fifth wheel makes extended stays or weekend trips to the lake enjoyable! The chef of your group will find plenty of counter space with the included kitchen island, plus there is a pantry and 18 cu. ft. residential refrigerator for food storage. A free-standing dinette provides a place to dine together, and the largest L-shaped sofa with recliners will be the perfect spot to relax with a movie. If you have guests, they could sleep here or on the hide-a-bed sofa sleeper. The dual entry bath includes a shower with a seat for added comfort, and the front master bedroom will feel just like home with its king bed slide out and master closet. There is also a dresser and stackable washer and dryer prep if you want to add those appliances!
With any Keystone luxury Alpine Avalanche Edition fifth wheel, you will experience wide-body construction that allows you to stretch out and stay awhile during any season thanks to the Polar Pack All Season Protection that includes a heated and enclosed underbelly, an Astro foil reflective layer on the roof, front and rear walls, and two static attic vents, plus more! The interior offers hardwood slide out fascia with wood accents, designer upholstered window valances with custom wood window frame, plus your choice of modern interior design. There are many more Keystone exclusives, like the Tru-Fit slide construction, the in-floor heating ducts, KeyTV™, and much more to bring you a full-packed, luxury fifth wheel!
Specifications
Length
40 ft 10 in
Sleeps
6 people
Slideouts
5
Unit features & options
- Standard Features (2026)
- Exterior
- 12" I-Beams w/ Z-frame technology and 100" wide-body construction
- 10" I-Beams w/Z-frame technology and 100" wide-body construction (302RS & 338GK)
- Road Armor™ shock absorbing hitch pin
- MaxTurn™ Technology and Hitch Vision™ w/ LED lighting
- High-gloss Laminated sidewalls w/ double-welded aluminum construction
- Large, tinted safety glass windows (80% tint)
- Framless Dual pane windows (Optional)
- Painted fiberglass cap w/ patented Key Shield™ protection and LED lighting
- Radius roof w/ 5" pre-engineered roof trusses and walkable rafters
- 1-piece Alpha Super Flex TPO membrane
- Rear-mounted exterior ladder
- Summit slide-rooms w/ 6'10" interior height and hydraulic selector valves for slide outs
- Heated and enclosed underbelly w/ 1-piece polypropylene
- Dexter® heavy duty 7,000 lb. axles w/ Nev-R-Adjust brakes
- Slide Awnings: Triples (Optional)
- Road Armor™ Shock Absorbing Suspension w/ wet bolts, brass bushings, and oversized 1/2" shackles
- Sailun G-rated tires
- Lippert T.P.M.S Prep Port
- Premium Lippert® Titan-BaseCamp 6-point Hydraulic auto-leveling system (includes larger landing gear, LED lights at all jack posts, and intuitive touch screen w/ integrated BlueTooth capabilities)
- Super size, 6' 4" tall, 30" wide entry door
- Lippert Strut Assisted SolidStep®
- 150 Cu. Ft. heated basement storage and class "A" style, dual latch "slam" doors
Full specifications
Get more info
2026 Alpine Avalanche Edition 366LS
Dealer information
Keystone Alpine Avalanche Edition fifth wheel 366LS highlights:
Five Slides King Bed Free-Standing Dinette Largest L-Shaped Sofa Desk with a Chair
This rear kitchen fifth wheel makes extended stays or weekend trips to the lake enjoyable! The chef of your group will find plenty of counter space with the included kitchen island, plus there is a pantry and 18 cu. ft. residential refrigerator for food storage. A free-standing dinette provides a place to dine together, and the largest L-shaped sofa with recliners will be the perfect spot to relax with a movie. If you have guests, they could sleep here or on the hide-a-bed sofa sleeper. The dual entry bath includes a shower with a seat for added comfort, and the front master bedroom will feel just like home with its king bed slide out and master closet. There is also a dresser and stackable washer and dryer prep if you want to add those appliances!
With any Keystone luxury Alpine Avalanche Edition fifth wheel, you will experience wide-body construction that allows you to stretch out and stay awhile during any season thanks to the Polar Pack All Season Protection that includes a heated and enclosed underbelly, an Astro foil reflective layer on the roof, front and rear walls, and two static attic vents, plus more! The interior offers hardwood slide out fascia with wood accents, designer upholstered window valances with custom wood window frame, plus your choice of modern interior design. There are many more Keystone exclusives, like the Tru-Fit slide construction, the in-floor heating ducts, KeyTV™, and much more to bring you a full-packed, luxury fifth wheel!
Specifications
Length
40 ft 10 in
Sleeps
6 people
Slideouts
5
Unit features & options
- Standard Features (2026)
- Exterior
- 12" I-Beams w/ Z-frame technology and 100" wide-body construction
- 10" I-Beams w/Z-frame technology and 100" wide-body construction (302RS & 338GK)
- Road Armor™ shock absorbing hitch pin
- MaxTurn™ Technology and Hitch Vision™ w/ LED lighting
- High-gloss Laminated sidewalls w/ double-welded aluminum construction
- Large, tinted safety glass windows (80% tint)
- Framless Dual pane windows (Optional)
- Painted fiberglass cap w/ patented Key Shield™ protection and LED lighting
- Radius roof w/ 5" pre-engineered roof trusses and walkable rafters
- 1-piece Alpha Super Flex TPO membrane
- Rear-mounted exterior ladder
- Summit slide-rooms w/ 6'10" interior height and hydraulic selector valves for slide outs
- Heated and enclosed underbelly w/ 1-piece polypropylene
- Dexter® heavy duty 7,000 lb. axles w/ Nev-R-Adjust brakes
- Slide Awnings: Triples (Optional)
- Road Armor™ Shock Absorbing Suspension w/ wet bolts, brass bushings, and oversized 1/2" shackles
- Sailun G-rated tires
- Lippert T.P.M.S Prep Port
- Premium Lippert® Titan-BaseCamp 6-point Hydraulic auto-leveling system (includes larger landing gear, LED lights at all jack posts, and intuitive touch screen w/ integrated BlueTooth capabilities)
- Super size, 6' 4" tall, 30" wide entry door
- Lippert Strut Assisted SolidStep®
- 150 Cu. Ft. heated basement storage and class "A" style, dual latch "slam" doors
Full specifications
Get more info
2026 Alpine Avalanche Edition 366LS
