Product Description with DU-E8000 and other motors The STEPS FC-E8000 crank arms from Shimano are suited for MTB, touring and city e-bikes with DU-E8000, DU-E7000, DU-E6100 and DU-E6110 motors. They have 24 mm axle teeth and are mounted directly on the axle of the drive unit. The crank arms are made of painted aluminium and are solid. When used with DU-E8000 you get a Q-factor of 177 mm, in combination with the other motors a Q-factor of 180 mm. In these cases you can also use the FC-E8000 with a chain case. Thanks to their rigidity, the FC-E8000 can easily withstand the high forces typical of electric bikes. Guidelines for Replacing E-bike Components:Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance. Specifications:Application:All Mountain, Cross Country, City & TouringCompatibility:1xTechnical Information:Series:STEPSCrank Arm Material:AluminiumCrank Arm Length:160.0 mm, 165.0 mm, 170.0 mm, 175.0 mmQ-Factor:177 mm / 180 mmAxle Diameter:24 mmCompatibility:Motors: DU-E8000DU-E7000DU-E6110DU-E6100DU-E8080 (Japanese market only)DU-E6180 (Japanese market only) Chain Case: compatible in combination with DU-E7000 / E6110 / E6100Features:special crank arm set for e-bikessolid aluminiumpaintedQ-factor 177 mm in combination with DU-E8000Q-factor 180 mm in combination with DU-E7000 / E6110 / E6100stiff construction for the best power transferManufacturer Numbers:160.0 mm:E-FCE8000MX165.0 mm:E-FCE8000AX170.0 mm:E-FCE8000CX175.0 mm:E-FCE8000EXContents:1 x pair Shimano STEPS FC-E8000 Crank Arms2 x crank bolts Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com