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Your cart is empty.With the REACT series, KMC has filled a gap in its lineup of drive solutions. Just like KMC chainrings and sprockets, REACT cassettes are precisely designed to match KMC chains. This perfect synergy reduces friction between individual components and enhances the lifespan of all drive components. Meticulously crafted ascent and descent ramps ensure precise chain guidance, improving shifting performance across the entire range. Made from high-strength steel, REACT cassettes are compatible with HG Freehub Bodies and available in various configurations for 8- to 11-speed systems.
stacey carlton
Reviewed in the United States on September 13, 2024
As a bike dealer/builder I deal with every brand of CST and these are the worst. Bent teeth within 1 ride. Tested 1 and never another. Stick to chains.
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