2014 Keystone RV Avalanche 343RS, For a great deal call the Sales Dept at 936-825-2357. What we can do for YOU??? 2014 Keystone RV Avalanche 343RS The first next-generation fifth wheel designed for today's family. Avalanche offers features, comforts and livability for extended trips or weekend vacations. With emphasis on family friendly floorplans, Avalanche is the ideal coach for the active lifestyle.