New 2026 Keystone COUGAR 350 LLK

The 2026 Keystone Cougar 350LLK is a 39.25-foot premium fifth wheel designed specifically for couples who prioritize a high-end culinary experience and a spacious social layout. The hallmark of the 350LLK is its expansive rear kitchen, which features nearly 360 degrees of solid-surface counter space, a 16 cu. ft. 12V refrigerator, and a residential-sized microwave. This flows into a central living zone anchored by an oversized L-shaped sofa with integrated recliners and a free-standing dinette, all perfectly positioned to view the 50-inch Smart TV and fireplace. Four slideouts across the floor plan ensure the interior feels like a luxury apartment, while the front master suite offers a queen bed, a full-height wardrobe with washer/dryer prep, and a large fiberglass shower with a seat.

Built with Keystone’s 5-sided aluminum superstructure and HyperCore composite sidewalls, the 350LLK is engineered for long-term durability and climate control. It features the Climate Guard protection package, incorporating a heated and enclosed underbelly with 12V heat pads on the holding tanks for extended-season use. At a dry weight of 12,040 lbs. and a hitch weight of 2,240 lbs., it provides a stable towing profile supported by heavy-duty 7,000 lb. axles with ABS brakes and the Road Armor shock-absorbing equalizer. With standard 4-point electric auto-leveling, a tankless on-demand water heater, and a dual-awning setup with LED lighting, this 2026 model represents the pinnacle of the Cougar lineup for those seeking a residential, entertainer-friendly retreat.

The 2026 Keystone Cougar 350LLK is a 39.25-foot premium fifth wheel designed specifically for couples who prioritize a high-end culinary experience and a spacious social layout. The hallmark of the 350LLK is its expansive rear kitchen, which features nearly 360 degrees of solid-surface counter space, a 16 cu. ft. 12V refrigerator, and a residential-sized microwave. This flows into a central living zone anchored by an oversized L-shaped sofa with integrated recliners and a free-standing dinette, all perfectly positioned to view the 50-inch Smart TV and fireplace. Four slideouts across the floor plan ensure the interior feels like a luxury apartment, while the front master suite offers a queen bed, a full-height wardrobe with washer/dryer prep, and a large fiberglass shower with a seat.

Built with Keystone’s 5-sided aluminum superstructure and HyperCore composite sidewalls, the 350LLK is engineered for long-term durability and climate control. It features the Climate Guard protection package, incorporating a heated and enclosed underbelly with 12V heat pads on the holding tanks for extended-season use. At a dry weight of 12,040 lbs. and a hitch weight of 2,240 lbs., it provides a stable towing profile supported by heavy-duty 7,000 lb. axles with ABS brakes and the Road Armor shock-absorbing equalizer. With standard 4-point electric auto-leveling, a tankless on-demand water heater, and a dual-awning setup with LED lighting, this 2026 model represents the pinnacle of the Cougar lineup for those seeking a residential, entertainer-friendly retreat.