Shimano FC-M985 10-Speed XTR Chainset HollowTech II

Class-leading XTR 10-speed Dyna-Sys chainset, integrating the bottom bracket and chainset into a strong, rigid, yet lightweight unit

Integrated design makes installation and adjustments easier than ever

Precision bottom bracket bearings are spaced further apart, and are therefore more stable and longer lasting than conventional bottom brackets

Super-lightweight HollowTech II forged Duralumin crank arms - hollow design saves weight whilst increasing rigidity

Easy to use splined bottom bracket spindle connection provides a rigid and secure interface between crank and spindle

True double MTB chainset with 48.8 mm chainline, ideally suited for XC racing combined with the 11-36T XTR cassette

Development has resulted in stiffer, light weight and hard-wearing HG-X 7075 aluminium outer and inner chainrings with a highly durable Nickel-plate treatment

HG-X chainring with patented spike pins give smooth and fast gear shifts under load

88 mm PCD four-arm chainrings

For use with 10-speed HG-X MTB chains only

Average weight 720 g (42-30T, 175 mm including BB)