Beware of inferior COUNTERFEIT XTR chains, they are epidemic online (EBAY, AMAZON and Aliexpress) costing $45-$60. Some of them even have solid pins A genuine Hollow Pin M9100 XTR chain is $100 or more at most shops.
This is the genuine hollow pin chain with reputation for long life and toughness. Honestly this is the most reliable and long lasting chain I have used, usually 2000 miles before needing replaced. This toughness is clear when sizing it, the pin is very hard to break with chain tool.
(2) New 126L Chains available, $69ea. Genuine, no fakes.
ALSO, low use from a parted out bike that used a 34 x 51T drivetrain, clean and strong. No stretch. Genuine Shimano. Sized to 118 links, comes with quick link. $39
CN-M9100 HG+ Hyperglide technology
ALSO have used 10-51T Shimano XT Microspline Cassette, $39 used, $89 new.
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