High-strength pinion gear made from tough 7075 T6 aluminum and especially hardcoated for superior power, light-weight, and high durability. Developed on a unique gear device, all pinions function ultra-precise enamel shaping and ultra-true running for vibration-free procedure. Fine interior threading allows easy installation. Each pinion is okay etched because of the enamel quantity for fast & simple recognition. Fits GTXE cars.