Gearing Kit for SD40-2

Self-lubricating gearing kit for Athearn locomotive trucks. Kits produce more realistic control and smoother operation, with lower low speeds, twice the power and brighter headlights. Keeps motor running cooler, increasing motor life. Triple reduction. Converts 12:1 ratio of the stock SD40-2 to a 32:1 gear ratio. Greater pulling power, slower speed and less current draw.