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Shimano BB-UN300

Shimano BB-UN300
Color: Silver
Length: Select length
Model: English
Spindle: Square Taper
Width: 68mm
Please select options Unavailable


- 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
Silver / 117.5mm / English / Square Taper / 68mm 192790619224 EBBUN300B17X 210000002434
Silver / 127.5mm / English / Square Taper / 68mm 192790619316 EBBUN300B27B 210000003664