DT Swiss Ratchet LN Aluminum Freehub Upgrade Kit Description: This DT Swiss Ratchet LN Aluminum Freehub Upgrade Kit converts DT Swiss 360 series rear hubs and select DT Swiss rear wheels equipped with a 3-pawl freehub driving mechanism to the beloved DT Swiss Ratchet drive system. This upgrade will produce a very positive engagement within the drive mechanism and improve the durability, especially if the hub is going to be installed on a heavy bike, used by a powerful rider that quickly wears out inexpensive hubs, and/or used on an e-bike. Features: Converts 3-pawl DT Swiss hubs to DT Swiss's robust and quick engaging star ratchet freehub drive mechanism 18T Rachet provides more robust engagement due to the thick teeth on the ratchet rings, which is well suited to hold up to the torque produced by powerful riders and e-bikes Freehub accepts Shimano MicroSpline cassettes Requires DT Swiss 3-pawl and Star Ratchet tools for installation Specifications: Compatible With: DT Swiss 360 Rear Hub Each Kit Includes: (1) Freehub Body (2) Star Ratchet Rings (2) Ratchet Ring Springs (1) Axle Spacer (1) Hub shell Ring Drive Interface (1) Washer (1) Tube of DT Swiss Special Grease (For Star Ratchet Rings)