Shimano Alfine DI2 S505 Internal Hub - 8 speed
This internally geared hub is fully compatible with both Alfine 8-speed Di2 shifters, features a Centerlock disc brake mount, but is also V-brake compatible.
It requires the MU-S705B 8-speed motor unit, roto, axle nuts, cog snap-ring, non-tun washer, and optional CS-S500 sprocket. Requires Di2 control unit, wiring harness, battery and shifter to operate.
This is a hub only.
- Di2 electronic compatibility for fast, precise, weather-proof shifting
- 8-gear ratios available
- Centerlock disc brake and v-brake compatible
- 135mm bolt-on axle
- Gearing Ratios: Gear Ratio 1 0.527 Gear Ratio 2 0.644 Gear Ratio 3 0.748 Gear Ratio 4 0.851 Gear Ratio 5 1 Gear Ratio 6 1.223 Gear Ratio 7 1.419 Gear Ratio 8 1.615