ALFINE 8-Speed Internal Hub

Technical Documents
  • 8-speed Internal Hub Gear for Disc Brake Use
  • Highest Shimano internal hub efficiency
  • Double roller clutch engagement for smoother, quieter shifting
  • V-Brake & DIsc Brake compatible
  • Center Lock disc brake rotor mount
  • Close Ratio Wide-Range gearing
  • Improved Sealing
  • Robust Construction
  • With 20T rear cog - gearing equivalent to 12-38T cassette
Model Number SG-S500
Speeds 8.0
Silent Clutch yes
Gear Change Support yes
Shifting Power Modulator yes
Driving Efficiency High
Shifting Lever SL-S500 (SB/SL/ST-8S20)
Coaster Brake -
Roller Brake Compatible -
Dust Cap for V-Brake -
Disc Brake Rotor Mount Center Lock
Hub Shell Material aluminum
Hub Shell Finish anodized
Gear Ratio Total Difference 3.07
Gear Ratio 1 0.527
Gear Ratio 2 0.644
Gear Ratio 3 0.748
Gear Ratio 4 0.851
Gear Ratio 5 1.0
Gear Ratio 6 1.223
Gear Ratio 7 1.419
Gear Ratio 8 1.615
Gear Ratio 9
Gear Ratio 10
Gear Ratio 11
Axle Length 135mm
Over Locknut 185mm
Spoke Holes 32H/36H
Spoke Size #13, #14
Sprocket Options 18T, 20T (CS-S500)
Chain Line 42mm
Cassette Joint CJ-8S20, CJ-8S40
Average Weight
Flange Distance (mm)
Spoke Hole PCD (mm)
Flange Diameter (mm)
Flange Width (mm)
Sprocket Thickness (mm)
Chain Size
Shimano Recommended Chain
Dishing Distance (mm)
Shifting Switch
Motor Unit