As I have discussed in this forum before I am planning to change my swing arm in the next month. I will be changing the chain length at the time and have been looking into the different types and strength. I would like to upgrade to an EK ZZZ 530 150 link chain, but then the idea of the stock sprocket comes into mind. I don't want the chain to be so strong that it eats my sprockets instead of breaking the chain. Does anyone know the material of the stock sprockets? I know that the rule of thumb is to replace the sprockets at the same time, but the bike only has 5,000 miles on it so the sprocket wear should be minimal.