The Tekno RC TKR5149A Aluminum Differential Cross Pin (6‑Pack) is a precision‑machined set of lightweight cross pins designed for use with TKR5150 differential gear sets. Made from durable aluminum, these pins offer strength and reduced weight compared to standard steel versions, helping improve differential responsiveness and reduce overall rotating mass. They are fully compatible with Tekno RC platforms that use the TKR5150 differential (such as SCT410 and MT410 models), making them an ideal upgrade or replacement when rebuilding your differential for smoother operation and enhanced drivetrain performance.