Shimano MX66 Cassette Cogs

• 16t and 18t sizes available

• Cog is Shimano compatible (obviously) and will work with any Shimano compatible single speed hub.  However, the thin profile of this cog may bite into cassette bodies making them wear more quickly that a Crupi cog which has a much wider foot surface area.   

• using this cog on Rhythm cassette hubs will require more spacers to keep the cog tight.