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Shimano Alfine SG-S501 8-Speed Internally Geared Disc brake 32h Rear Hub Black

This product is no longer available for sale. The last date it was available was 4/1/2015.

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AEBike Part Number: HU7887
Manufacturer:  Shimano
Manufacturer Part Number: ISGS501BL
UPC: 689228239333

Shimano Alfine SG-S501 8-speed disc hub. Shimano's highest efficiency internally geared hub with silent double roller clutch engagement for smooth, quiet shifting.
  • Recommended gear ratio: 2.0-2.25 to 1
  • Not intended for off-road use as standing on the pedals, riding up steep hills or using an too low of a gear ratio may damage the pawls inside the hub
  • 8-speeds covering a 307% gear range
  • Center lock disc brake rotor compatible
  • Installation requires addtional parts; HU7825 (small parts kit), 8-speed Alfine/Nexus shifter and an Alfine/Nexus cog
  • Nexus/Alfine 8-speed hub gear range: 1st gear = 0.527, 2nd gear = 0.644, 3rd gear = 0.748, 4th gear = 0.851, 5th gear = 1.00 (direct drive), 6th gear = 1.223, 7th gear = 1.419, 8th gear = 1.615
Item Specifications
Hub Drilling32
Rear Axle Type3/8" bolt on
Cassette Body TypeSingle Cog Driver
Hub/Brake CompatibilityCenter-Lock Disc
Rear Hub Spacing135
Hub Flange Diameter92.75
Hub Center to Flange24.5
Hub Center to Flange31.5
Skewer IncludedN/A

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