Shimano Dura Ace HG901 11 Speed Chain Shimano's top-end model, this Dura-Ace road bike chain will ensure your 11 speed drivetrain operates smoothly and shifts cleanly. Low in weight and highly durable for those who spend many hours in the saddle, it has Shimano's HG-EV technology to enhance your gear changes even further.Features:Material: Zinc-Alloy Plated (Inner and Outer links)Chain Width: 5.62mm Use: Road Adjustable: Yes Included: Chain, joining pin Compatibility: 11-speed drivetrains Quicklink: No Optimised for 11-speed Super Narrow HG-EV drivetrainsOuter plate design has been developed to reduce the chance of chain suckSil-Tec surface treatment technology (PTFE plating) on inner and outer links and rollers that is smooth running and increases durability Hollow pins for added weight savingThe inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity and near silent running Weight: 243gA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.