2027 Keystone Cougar 350LLK vs 355FBS
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Key differences
Both are 2027 Fifth wheel models from the Keystone Cougar line. Here's how they differ, from manufacturer specifications.
- Both are 39′ 3″ long.
- The 355FBS is 238 lb lighter unloaded: 11,802 vs 12,040 lb.
- The 350LLK lists 862 lb more cargo capacity: 2,960 vs 2,098 lb.
- The 355FBS has a 240 lb lighter hitch weight: 2,000 vs 2,240 lb.
- The 355FBS sleeps 2 more: 6 vs 4.
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YOUR SHORTLIST
Floorplan
PRICING
Manufacturer price (USD)
Not verified
Not verified
Lowest tracked dealer price (USD)
No recently verified dealer price
No recently verified dealer price
Est. monthly payment (USD)
No verified price to estimate from
No verified price to estimate from
DIMENSIONS & WEIGHTS
Exterior length
39′ 3″
39′ 3″
Exterior width
—
—
Exterior height
13′ 4″
13′ 4″
Shipping / unloaded weight
12,040 lb
11,802 lb
GVWR
—
—
Listed cargo capacity
2,960 lb
2,098 lb
Listed hitch weight
2,240 lb
2,000 lb
LIVING & SLEEPING
Sleeping capacity
4
6
Slide-outs
—
—
Main bed
Conflicting data
Conflicting data
Bunk beds
No
No
Dinette
Not verified
Not verified
Bathroom
Not verified
Not verified
Refrigerator
16 Cu. Ft. 12V refrigerator w/ dent resistant doors
16 Cu. Ft. 12V refrigerator w/ dent resistant doors
TANKS & EVERYDAY FEATURES
Fresh water
75 gal
75 gal
Gray water
76 gal
76 gal
Black water
38 gal
76 gal
Awning length
—
—
Shore power / electrical service
50 amp standard
50 amp standard
Solar equipment
SolarFlex™ Ready
SolarFlex™ Ready
Outdoor kitchen
No
No
Washer/dryer prep
✓ Yes
✓ Yes
Microwave
✓ Yes
✓ Yes
Cooktop
21" Furrion® range w/ Piezo ignition and glass stovetop cover
21" Furrion® range w/ Piezo ignition and glass stovetop cover
Air conditioning
Furrion Quick Cool 15,000 BTU Ducted Bedroom A/C with Heat Pump
Furrion Quick Cool 15,000 BTU Ducted Bedroom A/C with Heat Pump
Electric fireplace
✓ Yes
✓ Yes
Backup camera
Not verified
Not verified
Propane tanks
2
2
Tire size
ST235/80R16H
ST235/80R16H
SOURCES & VERIFICATION
Weight basis
Manufacturer shipping weight
Manufacturer shipping weight
Source checked
2026-10-22 Manufacturer ↗
2026-10-22 Manufacturer ↗
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Manufacturer floorplan images © their respective manufacturers. Specs checked October 19, 2026; exact-unit labels and production options may differ. “Not verified” or a dash means we have no confirmed value. “Not listed” means the applicable manufacturer equipment was checked but does not mention the feature; it does not mean “No.” “Conflicting data” means manufacturer entries disagree. “Optional” equipment is available but is not confirmed as standard. Camera prep does not confirm an installed camera. Weights are kept separate: unloaded weight, GVWR, cargo capacity, and hitch weight. Confirm every specification for the exact model year and configuration with the manufacturer. This tool does not establish towing compatibility.
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