This Shimano chainring allows you to update your Dura-Ace FC-R9100 11-speed crankset with a chainring configuration to best fit your riding style.

Integrates Shimano Hollowglide Technology: the high rigidity hollow structure cuts down on weight yet maintains strength to provide better power transfer and quicker more precise front shifting

Features a weight saving 4-bolt design with a BCD of 110 mm

Ring Position/Type	Inner
Tooth Count	42
Drivetrain Speeds	11
Chainring BCD	110 Shimano Asymmetric
Color	Black
Defined Color	Black
keyword search	Y1N242000
Size	42T