Shimano Dura-Ace CN-HG901 11 Speed Chain Echelon The 100% natural constituents include

The 100% natural constituents include Melaleuca Alternifolia (Australian Tea Tree) oil which gives antiseptic and aromatic qualities

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

Combinations: 39/53 - 36/52 - 34/50

Tooth: 34

Shimano Dura-Ace CN-HG901 11 Speed Chain Echelon The 100% natural constituents includeThe 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: