IRD Defiant Single Speed Crankset
These were the brainchild of American Cyclery, as we designed/re-designed/improved this crankset based off of Campy cranks from the 70's-80's.
Cold forged and then CNC machined
144 BCD (Bolt Circle Diameter)
46 tooth 1/8" chainring
To be paired with a JIS 110mm bottom bracket for a 42mm chain line.