MXS Motocross, SFX Series 2, Bike and Rider, Team Run-Off #15 MXS Motocross, SFX Series 2, Team Run-Off #15. Set includes Sound FX bike and rider and a bike stand. Twist handle bar to rev it for real engine sounds. Die-cast metal, real suspension. Includes 3 LR44 Button Cell Alkaline Batteries (non-replaceable)