Shimano, BB-UN300 D-NL, Square Taper BB, British, 68mm, : 122.5mm, Silver

Part Number: EBBUN300B22X

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* 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