IRD Defiant Road Double Cranks

Inspired by the Zeus and Sugino Mighty fluted cranks of the 70's, but these are cold-forged before adding the fluting touches. This makes for a stronger more reliable design.
- 130BCD
- CNC-machined alloy rings (53-39t)
- 9/10 speed compatible
- Cold forged aluminum arms
- JIS square taper