Shimano wide-ratio sprockets for road bikes are listed here, including compatibility by step number.
We have compiled a list of 12-speed chains that can be used with Shimano road bike and MTB components. Also about chain compatibility with chains from manufacturers other than Shimano.
KMC chains are popular because of their good shifting performance and high cost performance, and we have compiled a list of the types of KMC chains and the gears they support.
We have compiled a list of the different types of 12-speed (12s) sprockets, which are Shimano's top upper grade gears for road bikes and MTBs. Differences between models and points to consider when choosing.