The Deore 36/22 10 Speed 51.8mm MTB Chainset from Shimano is a value for money 2-piece design chainset for 10-speed Dyna-Sys MTB HG-X transmissions. The 2-piece design features an external bottom bracket system which is a lightweight rigid design that is incredibly strong and durable with a lightweight and rigid axle. The SG-X Dyna-Sys plus chainrings have patented spike pins to give smooth and fast gear shifts even under load. The inner chainrings are made from steel and the outer chainring is made from lightweight aluminium. This chainset is designed for a 51.8mm chainline plus 3mm chainline, developed specifically to work with 148mm OLD rear hub spacings. Available in Black with either 170mm or 175mm crank lengths.