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Weighing in at just 224g, the XTR M970 is Shimano's lightest mountain bike cassette. Exceptionally light, stiff and responsive, titanium sprockets provide superior shifting characteristics. Three piece alloy sprocket carrier reduces weight, increases sprocket stiffness and improves power transfer. Using specially contoured tooth profiles, Hyperglide sprockets increase shift speed and chain control. These profiles quickly guide the chain to next sprocket without override, which prevents slippage and shortens engagement time.
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