The Shimano Dura-Ace HG901-11 chain offers smooth and reliable shifting performance with an asymmetric plate design for 11-speed drivetrains. FEATURES: Compatible with 11-speed drivetrains SIL-TEC surface treatment: SIL-TEC is an advanced plating process that improves system performance through the use of imbedded flourine molecules. Its asymmetric design ensures smooth front and rear shifts while reducing drivetrain noise HG901-11 meets durability requirements for ebike use SPECS: Links (links): 116 Chain Connection Type: Pressed Pin Color: Silver Width: 5.62 Half Link Chain: No Designed for ebike: Yes Drivetrain Speeds: 11 Defined Color: Silver Weight: 247g