CN-9100 XTR/Dura-Ace 12 Spd. Red Hollowtech II Bottom Bracket

Hollowtech II Bottom Bracket

With its BEAM SPIDER construction

High-quality automatic cylinder

so you get more comfort and less pain

CN-9100 XTR/Dura-Ace 12 Spd. Red Hollowtech II Bottom BracketThe Shimano CN M9100 features an extended inner link plate that connects seamlessly with chainring teeth for highly efficient drivetrain performance. Its design offers a reduction in natural vibrations normally caused by the inner and outer chain plates rolling onto the chainring. It provides better chain engagement, stronger retention, and smoother pedaling. Enhancements to shifting performance Easy connect Non reusable Smoother driving even over