This is the Shimano XTR M9100 Chain. This chain is durable and reliable, while also featuring Hyperglide and SIL-TEC technologies that make the chain smooth and efficient. In addition to being Shimano's top-of-the-line mountain bike chain, the M9100 is also found on Shimano's 12-speed Dura-Ace road groupset.
Hyperglide+ chain design SIL-TEC surface treatment Quick Link (not reusable)