The Traxxas 5579 Differential Gears 38‑T/20‑T are precision‑engineered to ensure smooth, reliable power distribution and optimal gear mesh in your truck’s differential. Made from high‑quality, durable materials, this 38‑tooth and 20‑tooth gear set withstands high torque, aggressive driving, and rough terrain while maintaining consistent performance. Built to Traxxas factory specifications for a precise fit, they are compatible with models including the Traxxas Slash 4X4 and the Traxxas Rustler 4X4, providing dependable drivetrain performance and long‑lasting durability every time you hit the throttle.