Motovox Mini Bikes Motovox Pit Bikes – Here is the perfect replacement black rubber handlebar grip for the right side (throttle side) of Motovox pit bikes and mini bikes This throttle control grip will also work on the Baja Doodlebug and the Monster Moto / Mega Moto mini bike models. Here is the perfect replacement black rubber handlebar grip for the right side (throttle side) of Motovox pit bikes and mini bikes. This throttle control grip will also work on the Baja Doodlebug and the Monster Moto / Mega Moto mini bike models.