Quarq G3 Powertap 130mm End Cap (24377)
Quarq G3 Powertap 130mm End Cap (24377), The replacement PowerTap G3 Hub end caps are compatible with Gen 2 Hubs with 15mm axle and all G3 Hubs. 142mm thu axle end caps are only compatible with PowerTap G3 Disc Hubs and cannot be used to convert older hubs.