FSA SL-K Road Chainring

This chainring is designed for 4-bolt cranksets with a 110mm asymmetric bolt circle diameter (BCD). Before purchasing, verify that your crankset uses this specific asymmetric pattern, as it is not compatible with standard symmetric 110mm BCD setups.

The FSA SL-K chainring is engineered for modern road drivetrains. While it is optimized for performance shifting, you should confirm your specific chain width and derailleur compatibility to ensure smooth operation across your cassette.

The asymmetric bolt pattern is designed to align with the areas of highest stress during your pedal stroke. This configuration improves power transfer efficiency and reduces flex, resulting in a more responsive feel when you are putting down power.

You can replace other chainrings as long as the BCD, bolt count, and mounting pattern match exactly. Because this is a 4-bolt, 110mm asymmetric design, it is primarily intended for FSA cranksets that utilize this specific interface.

CNC machining allows for precise shaping of the teeth and ramps, which directly improves shifting speed and accuracy. This manufacturing process ensures the chain engages and disengages cleanly, minimizing energy loss during your ride.