What Does Shimano CI4 Mean?
CI4 stands for Carbon Interfusion with the 4 referring to the number of electrons in the carbon atom. This carbon fiber reinforced graphite material is over one and a half times stronger than Shimano’s normal XT-7 graphite and is over 20 percent lighter. What is the difference between Shimano Ultegra 5500 and 14000? The 14000 … Read more