Bottom Bracket Shimano BB-UN300 Square Taper 73x118mm

Shimano BB-UN300-73-118

The Shimano BB-UN300 is a square taper bottom bracket designed for compatibility with JIS square-taper crank sets.

The specific model with a 73mm shell width and 118mm spindle length offers the following features:

• Bottom Bracket Shell Width: 73mm
• Spindle Length: 118mm
• Spindle Interface Type: Square Taper JIS
• BB/Frame Interface: English threading (BSA)
• Bearing Type: Sealed cartridge bearings for smooth operation and durability.
• Crank arm Fixing Bolts: Not included. Shimano FC-E6000 bolts are recommended.