The SM 6125 Starter EGT (Epicyclic Gear Train) Gear Set is a specialized internal component kit designed for Bosch-style (B. Type) reduction starter motors utilized in heavy-duty three-wheeler applications. This specific configuration features a set of four planetary gears, providing enhanced load distribution and torque stability compared to standard three-gear sets. Precision-engineered from high-strength alloy steel, these gears are built to manage the high-torque output required for the Piaggio Ape range and other high-compression diesel utility vehicles.