Class-leading XTR 10-speed Dyna-Sys chainset integrating the bottom bracket & chainset into a strong rigid yet lightweight unit Integrated design makes installation & adjustments easier than ever Precision bottom bracket bearings are spaced further apart & are therefore more stable & longer lasting than conventional bottom brackets Super-lightweight Hollow Tech II forged Duralumin crank arms
- hollow design saves weight whilst increasing rigidity Easy to use splined bottom bracket spindle connection provides a rigid & secure interface between crank & spindle 38-26T double set up ideally suited for all-mountain use in conjunction with 11-36T cassettes Development has resulted in stiffer light weight & hard-wearing HG-X 7075 aluminium outer & inner chainrings with a highly durable Nickel-plate treatment HG-X chainring with patented spike pins give smooth & fast gear shifts under load 104 / 64 PCD four-arm chainrings For use with 10-speed HG-X MTB chains only Average weight 755 g &40;175 mm including BB&41;