CS-M9100 12-Speed Cassette Cog Unit - 10t (B) and 12t (D)

Shimano's CS - M9100 12 - Speed Cassette Cog Unit is a great choice for repair or replacement. It comes with 10 - tooth (B) and 12 - tooth (D) cogs. With 12 drivetrain speeds and made of high - quality steel, this unit ensures smooth and reliable performance for your cycling needs.

Using this Shimano CS - M9100 12 - Speed Cassette Cog Unit is easy. First, make sure your bike is suitable for a 12 - speed cassette. Then, carefully remove the old cogs and install the new 10 - tooth (B) and 12 - tooth (D) cogs. When using, avoid sudden and extreme gear changes to prevent damage. For maintenance, regularly clean the cogs with a mild bike cleaner and lubricate them to keep them running smoothly. If you notice any unusual noise or wear, it might be time to check the cogs again.