Shimano CS-R9200 Dura-Ace 12 Speed Cassette - 11-30T - Second Spin Wheels;Parts Dynamic Chain Engagement+ (DCE+) CompatibilityFeatures

Dynamic Chain Engagement+ (DCE+) CompatibilityFeatures extended inner plates for superior chain retention and seamless integration with Shimanos DCE+ chainrings and cassettesreducing chain bounce and drop during rough terrain or sprinting

Its innovative formula creates a secure mating surface

and half link chains

Valve hole diameter: 6

Trust in the Shimano XTR SM-BB94 for a ride that feels effortless and responsive

Shimano CS-R9200 Dura-Ace 12 Speed Cassette - 11-30T - Second Spin Wheels;Parts Dynamic Chain Engagement+ (DCE+) CompatibilityFeaturesPlease Note: Does Not include Warranty. This item is not eligible for returns, exchanges, or refunds. Please choose carefully.