2024 Keystone Cougar 290RLS vs 2024 Keystone Alpine 3600FL

Both the 2024 Keystone Cougar 290RLS and the 2024 Keystone Alpine 3600FL have loyal followings, and for good reason. Here's an objective look at how they measure up.

Specifications Comparison

Specification2024 Keystone Cougar 290RLS2024 Keystone Alpine 3600FLAdvantage
CategoryFifth WheelFifth Wheel
Year20242024Tie
Length31.5 ft39 ft
Width8.5 ft8 ft
Height13 ft13 ft
Dry Weight14,700 lbs10,000 lbs
GVWR18,900 lbs12,100 lbs
Sleeping Capacity77Tie
Fresh Water50 gal96 gal2024 Keystone Alpine 3600FL
Gray Water66 gal76 gal2024 Keystone Alpine 3600FL
Black Water49 gal38 gal2024 Keystone Cougar 290RLS
Fuel Capacity
Horsepower
Engine
Slide-Outs212024 Keystone Cougar 290RLS
Solar300 W450 W2024 Keystone Alpine 3600FL
Battery350 Ah200 Ah2024 Keystone Cougar 290RLS
Inverter1,500 W1,000 W2024 Keystone Cougar 290RLS
MSRP$127,000$129,0002024 Keystone Cougar 290RLS

Detailed Comparison

Both the 2024 Keystone Cougar 290RLS and the 2024 Keystone Alpine 3600FL have loyal followings, and for good reason. Here's an objective look at how they measure up.

Dimensionally, you're looking at 31.5 ft for the Keystone Cougar 290RLS and 39.0 ft for the Keystone Alpine 3600FL. The Keystone Cougar 290RLS carries an extra 4,700 lbs, which affects tow vehicle requirements and fuel economy.

The Keystone Cougar 290RLS sleeps 7 while the Keystone Alpine 3600FL accommodates 7. Slide-outs play a role in livability: the Keystone Cougar 290RLS has 2 and the Keystone Alpine 3600FL has 1.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Keystone Alpine 3600FL at 96 gallons versus 50 gallons. Solar-wise, you get 300W on the Keystone Cougar 290RLS and 450W on the Keystone Alpine 3600FL. Battery banks are 350 Ah and 200 Ah.

At $127,000 MSRP for the Keystone Cougar 290RLS and $129,000 for the Keystone Alpine 3600FL, the Keystone Cougar 290RLS saves you $2,000. With only a 2% price difference, the choice comes down to features rather than cost.

If you're traveling with a family, look for the model with more sleeping positions and better storage. Boondockers: look at the fresh water capacity and solar/battery systems — they determine how long you can stay out. For the full-time RV lifestyle, every gallon of tank capacity and every inch of counter space counts.

Whichever you choose, you'll be getting a capable rig. Just make sure to inspect one in person before signing.

Individual Overviews

2024 Keystone Cougar 290RLS

  • Category: Fifth Wheel
  • Length: 31.5 ft
  • Weight: 14,700 lbs
  • Sleeps: 7
  • MSRP: $127,000
View Full Specs

2024 Keystone Alpine 3600FL

  • Category: Fifth Wheel
  • Length: 39 ft
  • Weight: 10,000 lbs
  • Sleeps: 7
  • MSRP: $129,000
View Full Specs