Lockring for Centre-lock disk rotors. This lockring has an external tool fitting for Shimano bottom bracket tools (not the cassette lockring type). This is for through-axle hubs where the cassette type lockrings don’t leave enough space for the tool to fit over the axle. Sold individually.
note: If you prefer all our hubs can be used with the internal style lock ring if you have a slimmer lockring tool.