Incorporating the benefit of rigidity with minimal weight of the HollowtechII combined bottom bracket and crankset system, the new FC-M970 manages to drop even more weight while increasing shifting performance and durability.
Features
» 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
» Average weight 747 g (175 mm including BB)
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SHIMANO XTR M970 CHAINSET 
