The Inferno Fury is an economical racing clutch designed for durability. The sprockets are heat treated steel and the hub is heat treated. The Fury is available with an oil impregnated bronze bushing, or a needle bearing. The Fury is a long lasting low maintenance design with some tunability. The Fury clutch can handle excessive heat and give you consistent torque all race season. The Fury clutch is a great choice for the super heavy class.