Shimano BB-UN55 Square Spindle Bottom Brackets
FEATURES:
- Fits JIS Square-Taper Cranksets
- Hollow spindle
- Crankarm fixing bolts not included
SPECS:
- Spindle Interface Type: Square Taper JIS
- BB Shell Width (mm): 73
- Bottom Bracket Shell I.D.: 1.37
- Spindle Length: 107
- BB/Frame Interface: English
- Weight: 330