Compatible with 11-speed rear derailleur systems, the thick and thin single chainring is fully CNC-machined, effectively increasing the contact area with the chain and improving the compatibility between the chainring and chain. The mud-clearing hole design effectively expels mud and sand, and some models feature hard anodized treatment, which extends the lifespan of the chainring. Compatible with BCD110 systems for R9100/R8000/R7000 chainring interfaces.