In its 16th year of production the Challenger continues its tradition of offering the serious vacationer everything they could ever want. 2013 Challenger by Thor Motor Coach 37KT 2012 37' Thor Challenger !! Features that raise the bar. This design holds a very livable dining room kitchen bathroom bedroom and features a fireplace in the living room. the hot new 37KT offers its owners a residential style five room layout. (Harberson RV is a Full Service RV Dealership) RV - Class A Front Gas 7108 PSN ...