Shimano Alivio triple crankset, ES25 BB included. Chainring 44/32/22T …
輕量化 - 曲柄及齒片均採用較輕量及剛性較強的7系鋁合金 加粗曲柄 - 強化力量傳遞 一體式齒片 - 減輕重量同時強化力量傳遞 型號 …
2x11 configurationReduced weightCarbon-reinforced titanium alloy chainringsComputer-optimized shift paths DOUBLING DOWN ON THE TECH.Shimano has come around to understand the benefits of…