Rear hub model 177. Front hub model 77. 2 front hub / 2 rear hub / 2 cassette body. 6 Ceramic Bearing Kit. HSC Ceramic Bearings powered Australia’s fastest cyclists to a record-breaking 116 km/h, achieved by the Monash Human Power team at the World Human Powered Speed Challenge in Nevada, United States, on 15th September 2023.
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