Shimano Dura-Ace CN-HG901 11 Speed Chain Echelon the conic adapter allows to

the conic adapter allows to pass from flat to conic in a breeze

Clamp to mount SRAM RED 22 and Force 22 Yaw front derailleurs on frames without a braze-on socket

giving riders outstanding traction in both wet and dry conditions

while still offering a solid effective edge for grass and loam terrain

Shimano Dura-Ace CN-HG901 11 Speed Chain Echelon the conic adapter allows toThe Shimano Dura Ace CN HG901 11 Speed Chain receives a complete SIL TEC treatment on its plates and rollers for increased durability and efficiency. Its asymmetric design ensures smooth front and rear shifts while reducing drivetrain noise. Compatible with 11 speed drivetrains, the HG901 11 is also rated for e bike use. Specifications Rear drive: smooth driving without noise Front drive: preserves chain security at cross chainline Front & Rear Shift: