Gullwing Charger trucks feature a reverse kingpin style, best used for cruising and carving, and the knurled kingpin stays securely in place while riding all types of terrain. The 356 Aluminum and Chromoly axle have become the gold-standard of the truck industry and have proven themselves through years of use and abuse. This heat-treated aluminum cannot be die-cast, and is responsible for the strength and familiar grind characteristics you should expect from a quality truck.