Surly MR Whirly Crankarm Set Crankset

MR Whirly Crankarm Set

The Surly Mr. Whirly Crank Arm Sets is sold without spider or spinde for complete customization, allowing youTo build itTo beThe crank you want: single, double,Triple orTrials. Choose one armset, one spider and one spindle Outboard-style bearings must be purchased separately; useShimano Mtn, Race Face XType or FSA MegaEXO Armsets include bearingTension and dust caps andTwo sets of spider mounting bolts (one short for spider mounting only, and one long for mounting spider with granny ring) Forged

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