KMC X11EL 11 Speed Chain - Black BX Apparel With extended protection zones and

With extended protection zones and uninterrupted ventilation

Uses a common CR2032 battery that lasts for 200 riding hours and changes without tools

Screw on head

or alternatively check your bike's manufacturer's guide online

Compatible with BR-M9000

KMC X11EL 11 Speed Chain - Black BX Apparel With extended protection zones andOne Chain for All 100% Compatibility On All Leading Derailleur Systems Asymmetrical Chamfering Avoids Interference Added Chamfering for Smooth Operation Impeccable Precision Phenomenal Shifting Performance Features Extra Light Hollow outer & inner plate High Rigidity Quick response and higher efficiency Highest Pin Power Unsurpassed riveting geometry Mud Shedding Design Easy clean Triple X Durability Triple SP exceptional durability Double X Bridge