HOPE PRO 4 SHIMANO MICRO SPLINE FREEHUB BODYA NEW HOPEIt's a sad fact of life: your moving components on your bike will have to be replaced in order to keep your bike working properly. Some components will wear out after 1000 miles, and some will last much longer. The Hope Pro 4 Shimano Micro Spline Freehub Body is designed to replace the freehub body on your Hope Pro 4 hubs. It is only compatible with Shimano Micro Spline cassettes. Features Replaces your freehub body on your Hope Pro 4 hubs Compatible with Shimano Micro Spline cassettes Available for 12mm thru-axles as well as 10mm and QR | Hope Technology | Pro 4 Shimano Micro Spline Freehub Body 12Mm Throughaxle | Aluminum