Crupi cogs are Shimano compatible and designed to be reversed with 1mm of spacing on 1 side and 2.2mm of spacing on the other side providing you with the best chain alignment possible.

• Available in 6061 T-6 CNC Machined aluminum and 4130 Chromoly
• 12t through 18t sizes
• Weight of 16t Aluminum cog= 0.49oz
• Weight of 16t Chromolycog=1.34oz