Shimano SLX M670 10 Speed Triple Chainset including Bottom Bracket Dyna-Sys specific (HG-X) 10-speed mountain drivetrain compatibility Hollow-forged, 2-tone aluminum arms with a reinforced spider & an integrated Hollow Tech-II (HT2) bottom-bracket spindle for enhanced power transfer 4-arm 64/104mm BCD with anodized aluminum outer / composite-reinforced steel middle / steel inner HG-X chainrings with pins/ramps for precise shifting Bolt Circle: 104mm
Material: Alloy Dyna-Sys 10 speed compatible Easy climbing thanks to 24T lower chain ring Weight: 905g (FC-M670 42-32-24T)