Double weight lightened aluminum and magnesium alloy, the lightest hubs are around 1 gram. Three balanced casts, they are fitted to the axle with M2 Allen screws. The precise, calibrated interior diameter is 2.48 mm, standard for Ninco and most other brands. Ninco and most other brands. For use with Ninco F1/CART rear tires. NINCO's exclusive ribbed "anti-dive" system prevents tire shift and squirming under high torque & cornering loads. | 
