Shimano's BB-UN55 Square Spindle Bottom Brackets are the unofficial standard for English-threaded cartridge bottom brackets. Quality, value, and durability come together to keep you cranking for many, many miles.
- Fits JIS Square-Taper Cranksets
- Hollow spindle
- Crankarm fixing bolts not included
|107mm / English / Square Taper / 68mm||689228778801||EBBUN55B07||BBS23867251M|
|107mm / English / Square Taper / 73mm||689228778726||EBBUN55C07||BBS23435732M|
|113mm / Italian / Square Taper / 70mm||689228778856||EBBUN55I13||BBS29754820D|