
Shimano Octalink bottom bracket bsa 68 - 121mm with 1.37 threaded steel and resin cups. Bottom bracket of sealed bearings model ES300 compatible only with Octalink cranksets from Shimano.
Shimano Octalink bottom bracket bsa 68 - 121mm with 1.37 threaded steel and resin cups. Bottom bracket of sealed bearings model ES300 compatible only with Octalink cranksets from Shimano.
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