Shimano Crank Chainset Deore M617 38/24 175mm BK

Great value Deore 2-piece design chainset for 10-speed Dyna-Sys MTB HG-X transmissions The 2-piece design chainset features an external bottom bracket system which is a lightweight rigid design that is incredibly strong and durable Lightweight and rigid steel bottom bracket axle. SG-X Dyna-Sys plus chainrings with patented spike pin give smooth and fast gear shifting under load Lightweight aluminium outer with steel inner chainrings. We recommend that the bottom bracket is initially installed by a bike shop to ensure perfect facing and fit 104 / 64 mm bolt circle diameter. 10-speed Dyna-Sys compatible