FC-MT210 40x30x22T 170mm 9S BB Sold Separately Brand: Shimano / Shimano Model No: FCMT2103 Shimano Part No: EFCMT2103CX002XL JAN Code: 4524667881919 Type, Rear Compatible Speed 2-Piece Crank, 9-Speed Tooth Configuration Crank Length / Chain Guard 40X30X22T / 170MM / No Chainline, Q-Factor 50mm, 176mm Bottom Bracket, Chain BB-MT500/BB-MT500-PA, HG-9 Speed Color Black