Driver(s): Jim Koehler
Engine: Blown 575 Chevrolet Block
Horsepower: 1800
Transmission Coan/Bewick Turbo 400
Tires 66" Terra
Auto Air Colors, Boyce Equipment and Parts Company, WYATT Racing, RJS Racing Equipment, Coan Torque Converters, PTM Corp, Green Grease, VIS, SATA, Burkard, VFN Fiberglass, Kinsler, Bewick Transmission, Crossroads ,s and s sand Blasting, Smullen, Lucas Oil, ISP Innovative Safety Products, NGK Spark Plugs, Bell Engineering, Masters Tool & Die, Six B Apparel, Garner's Towing, msd ignitions
In 1997, a Monster Jam® truck with a mind of its own busted onto the Monster Jam scene. Avenger was created with a hot rod in mind, 1957 body, and only one person capable of handling its violent nature: Jim Koelher. Jim and Avenger have been to every Monster Jam World Finals since it first began in 1999. Jim acknowledges the fans in helping him make it to the Monster Jam World Finals because Avenger was voted “Fan Favorite.” Avenger had two bigger event highlights, when it was crowned the Monster Jam World Finals Freestyle Champion in 2003 and again in 2011.