Shimano BB-UN100 Bottom Bracket - English, 73 x 122.4mm, Square Taper JIS, Black

For square taper cranks, the Shimano BB-UN100 bottom bracket offers superior quality and reliability at a great value.

• Quick and precise assembly
• Superior quality and reliability at a great value
• Square type
• Spindle Interface Type: Square Taper JIS
• Bottom Bracket Shell I.D.: 1.37
• BB Shell Width (mm): 73 mm
• Spindle Length: 122.4
• Defined Color: Black
• BB/Frame Interface: English