DESCRIPTION
Option:
1, BSA thread (68mm): BB-R9100 BSA/English Threaded Shell (68mm width)
2, ITA thread (70mm): BB-R9100 Italian Threaded Shell fits (70mm width)
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Model: BB-R9100 (BSA thread)
Type: BSA/English Threaded
Material: Aluminum+ABS
Shell thread: 1.37" x 24T
Shell width: 68mm
Weight: about 65g
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Model: BB-R9100 (ITA thread)
Type: Italian Threaded
Material: Aluminum+ABS
Shell thread: 36mm x 24T
Shell width: 70mm
Weight: about 69g
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Sealed cups keep out dirt and water
Maintenance free, easy installation
Bottom bracket with small ball bearings for lightweight
Advanced seal construction for smoother rotation
