Replacing your chainrings when the teeth have undergone significant wear and tear is necessary. Chainrings are responsible for generating all the power you achieve through peddling, and take it to the drivetrain. Mountain bikes demand 4-arm and 5-arm chainrings, from gear specialists like Shimano, Demolition, and DMR. Some systems also use 2-arms chainrings with 10-sets of cassettes. For a roadie, our Campagnolo chainrings are the best along with other components like chainsets & crank and derailleur hangers.