Since its introduction, XTR has held true to its original design philosophy of delivering top-level performance in a lightweight, beautifully-engineered package. For 2006, XTR raises the bar again – by reducing complete group weight by almost a pound, increasing stiffness & strength, and delivering even more durability. When combined with innovative new features, XTR delivers the ultimate riding experience.
Incorporating the benefit of rigidity with minimal weight of the Hollowtech II combined bottom bracket and crankset system, the new FC-M970 manages to drop even more weight while increasing shifting performance and durability
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