XC -Rear ( Model FPRO1-R) and XC-Front ( Model FPR01-F ) FP Rotor Mounts. XC Rotor Mounts are compatible with many 32 spoke wheel hubs and they are specifically designed for cross country riders that demand the lightest, most durable hubs. XC Rotor Mounts are 49 g (rear) and 53g (front) in weight.
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