You’ll find self-help information here for any type of Losi RC vehicle you own, whether you bought it as a factory-built ready-to-run (RTR), a kit, or a roller. On this site you’ll find a variety of Losi support tools for effective do-it-yourself Losi RC vehicle maintenance and repair. The Losi ® team wants to make it as easy as possible for you to keep your Losi radio control car or truck off of the workbench and out on the track.