The work horse bottom bracket
- Sealed cartridge bearings
- Boron steel spindle
- Phosphated cups
- Anodized aluminum sheath
- Thread spec: BC1.37" x 24T
- 280 grams
- JIS taper (fits modern cranks- not compatible with classic European cranks)
- Available in the following sizes:
- 68mm shell by: 107mm, 110.5mm, 113mm, 118mm, 122.5mm, 127.5mm
- 73mm shell by: 110.5mm, 113mm, 118mm, 122.5mm
Great replacement for the Shimano BB-UN54 or BB-UN55
