Losi Promoto-SM 1/4 Super Moto Motorcycle, FXR, White LOS-22721 4 Promoto SM FXR Supermoto Motorcycle RTR Basic, White Overview Powering off the line, speeding down straights, and leaning through curves and turns, a unique harmony develops between a bike and its rider. The two intuitively become one. Despite its power, the two wheeler feels light and nimble as it reacts instantly to your cues as if it's simply an extension of you. That's also how it feels to drive Losi Promoto RC bikes. The Losi Promoto MX was