Skip to main content

Shimano BB-UN300

Shimano BB-UN300
Length: 118mm
Spindle: Square Taper
Width: 73mm
Please select options Unavailable
Order now and pick up in-store for free


- Simple and reliable square taper bottom bracket
- Replaces both BB-UN26 and BB-UN55
- Sealed cartridge bearings
- Cr-Mo axle
- For bicycles equipped with a chain case, select BB-UN300-K
- For E-type front derailleur compatibility, choose BB-UN300-E
- Fixing bolts not included; Shimano FC-E6000 bolts suggested

Part Numbers

Option UPC MPN Store SKU
118mm / Square Taper / 73mm 192790619248 EBBUN300C18X SHI63256065S