STEEL AND TITANIUM FOR AN IDEAL SPROCKET SET. 8 SPROCKETS OF THE RECORD SPROCKET SET ARE IN FACT MADE OF STEEL WHILE THE REMAINING 3 ARE IN TITANIUM. The last pair of three sprockets are mounted on a frame with a new structure that increases their rigidity. The steel sprockets have a Nickel-Chrome surface treatment. Eleven sprockets that are even more efficient despite the reduction of the thicknesses We have succeeded. The teeth have been designed to optimize the speed and fluidity of shifting. This form reduces stress on the chain which ascends more easily onto the higher diameter sprockets. The large pinions are divided into sets of three and are mounted on a new aluminium frame. Thanks to this, rigidity increases 180% and the individual sprockets are 70% more resistant to torsion. Steel-titanium 3Ti sprockets version is an excellent compromise between weight savings and cost Sprockets synchronization improved shifting precision, less stress for the chain Ultra-Shift teeth shape provides upshift optimization Nickel-chrome surface treatments on steel for longer life, lower wear Light-alloy lockring for weight savings, weight 201g