The Shimano Ultegra HG-X CN-HG700 11-Speed SIL-TEC Bicycle Chain features an asymmetrical design forimproved shifting. The Ultegra chain features additional SIL-TEC treatment. SIL-TEC is SHIMANO's new ultra-low friction surface treatment. SIL-TEC products run smoother and wear longer in all conditions.
Original Shimano parts guarantees that all components work perfectly for optimum performanceand maximum safety and longevity.