Featuring four titanium cogs, the new Shimano Dura-Ace 7900 cogset has further improved shifting quality by creating a more rigid aluminum carrier unit along with re-engineered tooth profile. Shimano also successfully reduced the weight of the rear wheel...
The Shimano Ultegra CS-6700 Cassette features a more rigid aluminum carrier that keeps the cogs in check when making shifts under load and each shift is lightning quick thanks to revised tooth profiles. The available ratios provide combinations that work...
Five largest sprockets - mounted onto two light alloy carriers resulting in reduced weight and increased sprocket stiffness Drilled out sprockets resulting in less weight Lightweight 9-speed sprockets - provide wider array of gear options Material...