2025 Keystone Montana 3855BR vs 2024 Keystone Avalanche 338GK

Detailed Comparison

Before committing to the 2025 Keystone Montana 3855BR or the 2024 Keystone Avalanche 338GK, it pays to understand exactly where each one shines and where it falls short.

The Keystone Montana 3855BR measures 28.5 ft in length at 12,000 lbs, compared to the Keystone Avalanche 338GK's 41.5 ft and 8,900 lbs. GVWR ratings sit at 16,300 lbs and 11,800 lbs respectively.

The Keystone Montana 3855BR sleeps 6 while the Keystone Avalanche 338GK accommodates 6. Slide-outs play a role in livability: the Keystone Montana 3855BR has 4 and the Keystone Avalanche 338GK has 2.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Keystone Avalanche 338GK at 67 gallons versus 67 gallons. Solar-wise, you get 300W on the Keystone Montana 3855BR and 400W on the Keystone Avalanche 338GK. Battery banks are 300 Ah and 200 Ah.

At $97,000 MSRP for the Keystone Montana 3855BR and $116,000 for the Keystone Avalanche 338GK, the Keystone Montana 3855BR saves you $19,000.

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.

No comparison can replace walking through each unit yourself. Visit a dealer and experience the layouts firsthand.