Shimano Alivio Cranksets feature Shimano's patented Hyperdrive system to provide quiet, easy and troublefree shifting making it the trend setting crank for quality recreational mountain bikes. Chainring spider is not removable All three chainrings are steel and replaceable 9Speed compatible, use with 9speed chain Item Specifications Color Black Spindle Interface Type Square Taper JIS Spindle Length 118mm Pedal Spindle 916
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