Shimano Alfine SG-S7001 8 Speed Rear Disc Hub - 135mm - Silver

- The Alfine 8 speed internal gear hub runs on needle bearings for increased durability and high drive efficiency
- Top normal internal structure for improved tolerance when shifting while riding user load
- Labyrinth seals improve sealing performance extending service life
- Alfine hubs use pedal power to aid down-shifting resulting in fast and accurate shifts with an exceptionally light feel
- Double roller clutch engagement also gives a smoother quieter shift
- Shimano's precise manufacturing abilities have enabled them to construct the Alfine internal hub to be there most efficient yet
- Centre-Lock disc rotor compatible
- 135mm O.L.D. spacing