Shimano Deore M590 Chainring

This chainring is specifically engineered for the Shimano Deore M590 crankset. While it may physically fit other 4-bolt, 104mm BCD cranksets, shifting performance is optimized for the M590's ramp and pin profile, so we recommend sticking to the intended model for the best results.

No, this product is the chainring only. You will need to reuse your existing chainring bolts or purchase a new set separately if your current ones are damaged or seized.

Look for 'shark fin' shaped teeth, where the tips are pointed or hooked rather than flat-topped. If you are experiencing chain skip under load or excessive noise despite a clean, lubricated drivetrain, it is likely time for a replacement.

The M590 series was originally designed for 9-speed systems. While it can often function with 10-speed chains, the tooth profile is optimized for the slightly wider 9-speed chain width, so you may notice a slight difference in shifting precision if you are running a modern 10-speed setup.