Shimano Alfine S7051-8 Di2 8 Speed Rear Disc Hub

• Improved internal structure for better gear engagement
  
• Improved performance for both e-bike and non-e-bike usage
  
• New smoother shifting performance
  
• Shimano "high" driving efficiency rating
  
• Double roller clutch for smooth, quiet shifting
  
• Di2 electronic shift compatible
  
• 8 speeds with a 307 gear range
  
• Shimano "top normal" shifting
  
• Center lock disc brake rotor compatible
  
• Oil port for lubrication
  
• Does not include shifter, cog, cog snap-ring, axle nuts, non-turn washers & cassette joint (Small Parts Kit)
  
• Compatible with Nexus cogs
  
• Rear Hub Spacing: 135mm
  
• Rear Axle Type: 10x1 bolt on
  
• Hub Drilling: 32 or 36
  
• Brake/Compatibility: Centerlock Rotor compatible
  
• Weight: 1,670g.
  
• Color: choose; Black or Silver