The Shimano DEORE FC-M5100 2x11-speed Boost crank with 178.5 mm Q-factor and 51.8 mm chainline offers maximum drive efficiency at low weight. In combination with the 11-42 tooth cassette, it delivers an incredible transmission bandwidth! The perfect set-up for long races and hard climbs. Due to supply chain issues, compatible parts may be substituted at any time without notice. Weights are based off pre-production products at time of publication. Weights may vary in final production.