Pullback Motor 10x5x4 Motorcycle, Lego(R) Part# Motor8. Use this motor for your motorcycle creations. Comes in sets 8354 - Exo Force Bike, 8371 - Extreme Power Bike, 8355 - Blaster Bike, and 8370 - Nitro Stunt Bike. 

Motors, transformers, sensors and hubs take your builds to the next level.