Chainring Track XL KRONOS JO SPACING 144 (70 to 75 teeth) 
 
Lighter and more resistant chainring than a carbon chainring.
Material used Aluminum 5086 T
Aero treatment Ti02.
Track spacing 144, for 3/32 chain, adaptable 1/2" X 1/8"
CNC machined (Computerized Numerical Control)
Personalized engraving possible