KMC - X9 ChainsKMC X9 CHAINS One chain for all with compatibility on all leading derailleur systems, choose the corresponding speed and KMC handles the rest for you. The X SERIES chains feature added chamfering at four points of the outter plates to ingeniously avoid interference between chain and cassette teeth for quieter performance. With craftsmanship second to none, KMC designed chains offer a unique configuration to instantly capture a shift for phenomenal

New Grip Shift mechanism takes SRAM’s original invention to an increased level of precision

its already legendary reliability continues for all-day epics

1/2" X 11/128"

The new SRAM DUB™ bottom bracket series has a simple job—connect your crankarms and protect the smooth

X-SYNC chainrings are compatible with Quarq® brand power meters

Revised ergonomics for better finger wrap and a revised shifter paddle for improved finger clearance

High rigidity design for quick response and higher efficiency

The special drains on the inside of the outer chainrings optimise performance when downshifting in dead spots

We also wanted to make it the last tool you need to fix everyone else's chain problems

Stainless steel hardware

Aluminum cover and adjustable forged aluminum pull lever

Speeds 12 Speed Rear Recommended Group XX1 Eagle Material Carbon Fiber Colours Black   FEATURES