Shimano

XT/Ultegra 12-Speed Chain

What Our Gearhead® Experts Are Saying:

"I switched to the CN-M8100 on my trail bike and instantly noticed the upgrade in shift quality. It’s snappy even under torque and runs noticeably quieter than other chains. It’s also held up surprisingly well on muddy days—definitely a go-to for any Shimano 12-speed drivetrain."

The Shimano CN-M8100 Chain brings optimized shifting and drivetrain stability to your 12-speed Shimano setup. Built specifically for HYPERGLIDE+ systems, this chain is engineered to reduce shift lag and improve overall pedaling efficiency—especially under load. Its longer inner plates create better contact with cogs and chainrings, boosting engagement and decreasing the chance of dropped chains on rough trails.

Shimano coats the CN-M8100 with their proprietary SIL-TEC treatment, a low-friction fluorine-infused finish that extends wear life and resists the buildup of grime—ideal for demanding off-road conditions. Its included SM-CN910-12 Quick-Link offers a secure connection that makes installation and replacement simple, without requiring special tools.

Available in both 126- and 138-link configurations, the CN-M8100 suits a range of full-suspension geometries, 1x drivetrains, and e-bike builds, delivering the kind of smooth, responsive performance we demand from our trail setups.