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The Shimano Dura-Ace FC-R9200 crankset offers smooth and rapid gear shifts thanks to advanced technology, making it ideal for intense training and racing.
Technology used in the outer disc of the crankset by SHIMANO. It involves hollowing out the largest sprocket and giving the disc a high degree of rigidity. The result is more precise gear changes.
HOLLOWTECH II
Hollowtech II is a technology developed by Shimano to improve crank mechanisms. This technology makes the mechanisms lighter, stronger and more efficient. A characteristic feature is the integration of one of the crank arms into the axle.
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