Mini Dirt Bike Full Circle Crank 47ccClick to enlarge Mini Dirt Bike Full Circle Crank 47cc. The advantages of fitting a full circle crank are increased torque and much smoother running throughout the rev range. Definitely a mod worth doing. £17.63 SpecificationsProduct Code: Mini Dirt Bike Full Circle Crank 47ccManufacturer: FunBikesProduct Weight: 0Stock Quantity - 3