LUXURY HAS MET ITS MATCH -  Introducing the all-new 2025 Keystone RV Alpine Avalanche edition 366LS – a fifth wheel designed for the ultimate road warrior. Built with 12" I-Beams and Z-frame technology for unmatched strength, combined with a 100" wide-body construction, this unit ensures maximum space and stability on every journey. The Road Armor™ shock-absorbing hitch pin paired with MaxTurn™ Technology and Hitch Vision™ with LED lighting makes hitching up a breeze and enhances towing performance.

Crafted for durability, the 366LS features laminated sidewalls with double-welded aluminum construction and a painted fiberglass cap with patented Key Shield™ protection. Its radius roof with 5" pre-engineered roof trusses and 1-piece Alpha Super Flex TPO membrane provide reliable protection against the elements. Large tinted safety glass windows (80% tint) and dual pane windows not only look sleek but ensure superior insulation. With heated and enclosed underbelly, this RV is built for extended-season camping, while the Dexter® heavy-duty 7,000 lb. axles and Road Armor™ suspension guarantee a smooth ride, even on rough terrain.

Step inside to discover unparalleled comfort with Summit slide rooms offering a towering 6'10" interior height. The 366LS also boasts a super-size 6'4" tall, 30" wide entry door with Lippert Strut Assisted SolidStep®, leading to an interior that’s as spacious as it is luxurious. Stay organized with 150 Cu. Ft. heated basement storage and dual latch “slam” doors, while the Nautilus™ water works center provides easy access to all your water needs, fully enclosed and heated for year-round use.

Other standout features include a 6-point hydraulic leveling system, Sailun G-rated tires with TPMS prep, generator prep, and a 2" towing hitch with 3,000 lbs towing capacity. Enjoy outdoor living with a Carefree power awning and outside shower, while safety is paramount with back-up and side camera prep.

Whether you’re a weekend warrior or a full-time adventurer, the 2025 Keystone RV 366LS delivers everything you need for the road – built to last, loaded with premium features, and ready for your next epic journey!

The Avalanche is engineered for year-round adventure with Polar Pack protection and heat ducting to tanks, complete with 12-volt heat pads to keep you comfortable in any season. Whether you're exploring winter landscapes or sunny getaways, the dual pane windows and slide topper awning package provide extra protection from the elements.

Inside, the stunning new Dovetail interior color creates a sophisticated and serene living environment, complemented by luxurious finishes and modern features. Every detail is designed with comfort in mind, making the 366LS the perfect choice for travelers who want to experience four-season camping in style.

To finish it off, rich finishes like hardwood slideout fascia with wood accents, night roller shades, and designer upholstered window valances with custom wood window frames, exude class and warmth. The solid wood cabinet doors, drawer fronts, and slide fascia add timeless elegance, making this fifth wheel a true home on wheels.

Relax in style with Thomas Payne® furniture featuring heat, massage, LED lights, and USB charging in the theatre seats, while the stunning 40" designer fireplace with a decorative surround creates a cozy ambiance. Topped off with crown molding, every inch of this RV showcases premium craftsmanship.

Step into your next adventure with the all-new 2025 Keystone RV 366LS—built for comfort, no matter where the road takes you!

Specification Name Specification Value

RV Type Fifth Wheel

Shipping Weight 13,940 lb.

Carrying Capacity 2,260 lb.

Hitch 2,295 lb.

Length 40 ft 10 in

Height 13 ft 4 in

Tire-Size ST235/80R16G

Fresh Water 75 gal

Gray Water 83 gal

Waste Water 49 gal

Sleeping Capacity 4

Number of Propane Tanks 2

LPG 60 lb.

Refrigerator Size 18 cu ft 12V