Browse replacement bicycle chainrings, single-speed rear sprockets and Gates Carbon Drive belt-drive sprockets. This selection includes Blackspire, Shimano, Norco Formula, Sturmey Archer and Gates components in selected sizes and mounting styles.
Match the component to your drivetrain
- Compare replacement chainrings by tooth count, bolt pattern, bolt circle diameter (BCD) and the stated drivetrain-speed compatibility.
- Check single-speed and hub sprockets for mounting type, chain width, profile and chainline requirements.
- For Gates belt-drive sprockets, confirm the exact product series, belt compatibility, mounting interface and intended front or rear position.
Chain-driven and belt-driven components are not interchangeable. A matching tooth count or spline count alone does not establish fit. Verify the manufacturer part number and your crankset or hub specifications before ordering, especially where listing details are incomplete or conflicting. Materials, included hardware and available sizes vary by product.
