Shimano Dura-Ace ST-R9170 Di2 2x11-Speed Left Shift/Brake Lever Model=FLOAT DPS Factory Rear Shock (mm) 38 Material Aluminum Spring

(mm) 38 Material Aluminum Spring Weight 300

Up to 50% more clamping force than standard quick releases

}RockShox DebonAir Air Can Upgrade Kit: 216mm x 63mm B1 and Later (Monarch 2014+/RT32013+)

Continuously molded cogs are straighter than stamped steel resulting in more consistent shifting performance from cassette to cassette

Shimano Dura-Ace ST-R9170 Di2 2x11-Speed Left Shift/Brake Lever Model=FLOAT DPS Factory Rear Shock (mm) 38 Material Aluminum SpringShimano Dura Ace ST R9170 Di2 2x11 Speed Left Shift Brake Lever. ST R9170 Dura Ace Di2 Shift Brake LeverShimano 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 Shimanos Reach Adjust technology to suit any hand size or rider preference TECH SPECS Rotor Included No