Class-leading XTR 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.
• Silver crank arm face for lasting good looks.
• Easy to use splined Octalink bottom bracket spindle connection provides a rigid and secure interface between crank and spindle.
• The middle chainring is made of titanium supported in a carbon shell which combine to produce a hard-wearing, light weight, and stiff set up.
• Development has resulted in stiffer, light weight and hard-wearing HyperDrive 7075 aluminium outer and inner chainrings with a highly durable Nickel-plate treatment.
• Conventional 104 / 64 PCD four-arm chainrings.
• For use with Super Narrow HG chain.
• Chainrings: 22t, 32t, 44t.
• Crank arm length: 170mm, 172.5mm, 175mm, 177.5mm, 180mm.
• Weight: 747g (175 mm including BB).