Shimano Steps FC-E6000 Crank Arm Set -170mmShimano Steps FC E6000 Crank Arm Set 170mm The Shimano FC E6000 crank arms have an elegant shape with a high quality anthracite grey finish. They are ideal replacement parts for Shimano's STePS E6000 automatic shift and power assist drivetrain system. Genuine Shimano replacement parts Crank arm length: 170mm Left and right crank arms only, no chainring or bottom bracket Designed for use with Shimano STePS E6000 drivetrain Bottom Bracket compatibility: