This is the flywheel casting. As the theory goes - the farthest rotating mass will hold the biggest amount of kinetic energy. So the most important factor is the outer diameter and the weight of the rim. Other weight should be ideally light. It also depends on the speed of rotation. This flywheel has the diameter and mass to suit the most needs. In case this will not be sufficient eg. to improve low revolution characteristic, you can add the steel rim on it. Or we can do it for you. In any case you will end up with the efficient flywheel with best weight to performance ratio.
We always have some flywheels in stock!