The xt m8000 single 142mm crankset without chainring from shimano is a high performance crankset from the classic mtb group the cranks are forged hollowtech ii aluminium to offer unrivalled strength to weight ratio and a 70 degree spider arm for optimal rigidity this set contains cranks only and must be run with sm crm80 dce chainrings and 11 speed hg x mtb chains it has a 50 mm chain line for use with 135142 mm rear axle width and the stiffness and strength has been increased with advanced