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Continuing advances in human engineering technology Shimano stand behind road components that provide racing, sport and fitness cyclists with higher levels of control & response. Ultegra shares Dura-Ace’s engineering lineage but has its own unique identity, offering greatly enhanced feel and sleek design that’s backed by a new level of performance.
Computer designed Hyperglide (HG) sprockets incorporate specifically positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result.