Troy-Bilt Vortex Tracker 2890XP 357cc 3-Stage Gas Snow Blower withElectric StartLike new Troy-Bilt Vortex Tracker 2890XP 357cc 3-Stage Gas Snow Blower with Electric Start. From the Troy Bilt literature. When winter brings heavy snow, you need a machine that can handle the task. The Troy-Bilt Vortex 2890 XP is built for performance and comfort.