Fouriers oversize derailleur cage with 12T upper and 16T lower pulley.
Carbon big cage plate and alloy small cage to reduce weight,
Pulley are full CNC made from aluminum 7075-T651 with full ceramic bearings. Oversize pulleys decrease drive train friction for high performance.
Compatible with Shimano RD 9000 / 9070 / 6800 / 6870.
Colour (Carbon Cage options): Red, Black.