note to all drivers using the "Vtrax" speedo,, dont forget to set your thermal protection levels in the speedo,, had mine set at the default which was 160 on the motor and just squeaked above it and shut me down in the main,, i was running 17.5 boosted in a B4.1 buggy, Geared 28/75,, running it very hard against MOD buggys,, and yes it was faster than 8.5 buggy's everywhere on the trak!!