Shimano BB-UN300 Bottom Bracket 73x122.5
Details
Shimano BB-UN300 Square Spindle Bottom Brackets
Fits JIS square-taper cranksets
Crankarm fixing bolts sold separately
Hollow spindle
Spindle Interface Type: Square Taper JIS
BB Shell Width (mm): 73
Bottom Bracket Shell I.D.: 1.37
Spindle Length: 122.5
BB/Frame Interface: English
Defined Color: Black