MXS Motocross, SFX Series 2, Bike and Rider, Team Dirt Grippers #06 MXS Motocross, SFX Series 2, Team Dirt Grippers #06. Set includes Sound FX bike and rider and a bike stand. Push up back wheel to rev it for real engine sounds. Die-cast metal, real suspension. Includes 3 LR44 Button Cell Alkaline Batteries (non-replaceable).