Shimano have given their deore xt and slx groupsets an update to create a new 10 speed drivetrain which includes cranksets chains cassettes derailleurs and 2 way release shifters the shimano deore hg94 chain is a light weight super narrow hg x 10 speed mountain bike chain which is optimised for mtb riding conditions the hg94 bicycle chains are directional the right hand side is optimised for front shifting and the left for rear shifting for incre