Shimano Dura-Ace ST-R9170 Di2 11-Speed Right Shift/Brake Lever Cassettes 128124-Q0-L

128124-Q0-L

Torx bolts included

c-clips and wavy washer for bearing retention/tension

fully adjustable clamping pressure

with the lightest weight air spring on the market

Shimano Dura-Ace ST-R9170 Di2 11-Speed Right Shift/Brake Lever Cassettes 128124-Q0-LThe Shimano Dura Ace ST R9170 brings both Shimano's praised hydraulic disc brake technology and the category leading DI2 electronic shifting in a package ready for the most demanding of race situations. Shimano Di2 compatible, hydraulic brake levers An updated button feel and layout ensure precise shifting while enhanced ergonomics guarantee comfort, allowing you to concentrate on the effort at hand Ergonomic brake and shift lever position with