Loaded with cutting edge tech, the New Balance FuelCell SuperComp SD-X will be your go-to track spike for sprinting and short-distance races. Designed to meet the needs of elite athletes, the secret to this super spike’s performance is its full-length carbon fiber plate and six built-in pins for rigidity and traction when you’re running all out. Bouncy and explosive during the straights and stable around the curves, the SD-X has an ultra-lightweight, high-rebound FuelCell midsole that feels like you’re running on clouds. The synthetic knit upper is reinforced in strategic areas for optimal lockdown and a lightweight, yet structured feel. Plus, the traditional and reliable lace closure lets you dial in your race-day fit every time. Experience the propulsive ride of the New Balance FuelCell SD-X on your way to setting new personal bests.