Magura Centerlock Rotor Lockring

The external notch design means the lockring features teeth on the outside perimeter, allowing you to use a standard external bottom bracket tool for installation. This is generally easier to access and use than internal spline designs, which often require specific, deeper-reaching tools.

Yes, this lockring is designed with universal compatibility in mind. It works with all standard Centerlock axle types, including quick-release and various thru-axle standards.

You will need a standard external bottom bracket tool, such as those used for Shimano Hollowtech II bottom brackets. Because of the external notch design, you do not need a specialized cassette lockring tool.

Yes, the Centerlock standard is widely standardized across the industry. This lockring will function correctly with most Centerlock rotors from other brands, provided the rotor thickness and hub interface are compatible with the Centerlock system.

If you are replacing a damaged lockring or performing a service, this is a high-quality, reliable replacement. The external notch design is often preferred by home mechanics for its ease of use compared to internal-spline lockrings that can be difficult to reach with certain tools.