The 3944X 14-tooth pinion gear is a durable replacement or upgrade for Traxxas RC vehicles, designed to ensure smooth and efficient power transfer in your drivetrain. Made from high-quality, wear-resistant metal, it withstands jumps, off-road driving, and high-speed runs while maintaining proper gear mesh and alignment. Easy to install, this pinion gear helps enhance drivetrain performance, reduce wear on other components, and keep your RC vehicle running reliably under all conditions.