The teeth of the Recordtm sprocket set have an UltraDrivetm design that integrates the chain and chainwheels of the crankset to ensure fast, precise and consistent shifting through the years. Titanium version Maximum weight savings. Aluminium carrier for the largest sprockets Precision, rigidity and weight savings. Sprocket synchronization Fast precise shifting, less stress for the chain. UltraDrivetm machining of the teeth Chain passage optimization. Spline
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