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SHIMANO ULTEGRA CS-6600
Hyperglide (HG) sprockets incorporate specifically positioned shift ramps and tooth profiles for improved chain control during shifting
Five largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigidity
Drilled out sprockets for less weight
Chrome plated for added durability and longevity
Lightweight 10-speed sprockets provide a wider gear range
Excl. postage