A dead man's car wins races because his father refused to let it stay broken. Speed Racer X treats every victory like a conversation between a son and the father who kept his memory running. The Mach isn't just fast, it's a monument that moves, and every lap is a lap the original driver never got to finish.
Go Hibiki inherits far more than a car when his father hands over the Mach, a revolutionary racing machine built from the wreckage of a tragedy. Years ago, Go's father Daisuke watched helplessly as his own racing prototype exploded during testing, seemingly taking his son Kenich with it. Instead of letting grief consume him, Daisuke rebuilt the shattered machine into something new: a high-tech racer equipped with seven protective systems and powered by an engine that shouldn't exist. Now Go pilots the Mach through international Grand Prix circuits, pushing the car to its limits against competitors who have no idea what they're facing. Every race is a test of skill and nerve, every victory a step toward uncovering the truth behind his father's mysterious past. But someone wants the Mach's secrets badly enough to kill for them, and Go finds himself caught between his hunger for speed and a conspiracy that reaches far beyond the racetrack.