Drivetrains deliver as much trust as they do power to the rear wheel. e*thirteen cranks, chainrings, and cassettes are engineered to meet this expectation, whether facing an extreme weather epic, or chasing PR’s through the rockiest descent on your local trail. Our drivetrain solutions target the sweet-spot balance of strength, dependability, lightweight, and precision efficiency no matter the conditions. e*thirteen drivetrain components also exemplify our commitment to cross compatibility, meaning you're free to combine our cranks, chainrings and cassettes with chains and derailleur systems of your choice, without compromise.