The FC-M315-B2 is a square-taper double crankset with riveted 36/22T steel chainrings. This 175mm version has aluminum arms and the listed 48.8mm chainline for its 7/8-speed mountain-bike configuration.
Riveted rings should be considered when planning replacement parts rather than assuming a removable bolt-on ring set. The bottom bracket is not included. Match the JIS interface, required spindle specification and chainline to the frame and drivetrain before ordering.





