Shimano

Alfine SG-S501 8-Speed Internally Geared Disc Brake Rear Hub

The Shimano Alfine internally geared hub uses a closer gear ratio, for more efficient and comfortable pedaling. Using a silent double roller clutch for smooth, quiet shifting, even when stopped, the Alfine hubs are truly an all-conditions hub. Compatible with Nexus and Alfine cogs, these hubs are center lock disc compatible.

• Shimano's highest efficiency internally geared hub
• Does not include shifter, rotor, cog, cog snap-ring, axle nuts, non-tun washers and cassette joint
• 8 speeds with a 307% gear range
• 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
• 135mm rear mountain spacing
• 1680g