In order to guarantee impeccable, reliable performance even with bigger cassettes, precision shifting by front and rear derailleurs has seen design of a 12-speed chain entailing huge research and development efforts to make it as reliable and long-lasting as an 11-speed chain, despite being narrower than the latter. The 12-speed Chorus groupset benefits from a special chain that ensures the same reliability and the same performance levels as that of the Super Record category, its 110 links weighing only 241 grams.
Due to the used materials and the special anti-friction treatment, this chain runs quiet and has a super smooth operation. It is necessary to use tool UT-CN300 to fit it.
The Ni-PTFE treatment ensures smoothness and long life. The Ultra-Link fastening system guarantees strength and operation with the 12-speed sprockets.