High-strength pinion gear created from tough 7075 T6 aluminum and especially hardcoated for superior strength, lightweight, and high durability. Developed on a particular gear unit, all pinions work ultra-precise enamel shaping and ultra-true running for vibration-free procedure. Fine inside threading permits easy installation. Each pinion is fine etched because of enamel volume for fast & effortless recognition. Fits GTXE cars.