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This research paper concentrates on BAJA ATV CVT premises thermal cooling. BAJA event has a 4-hour endurance run, which demands full potential from the drivetrain. In our drive train assembly, we have used CVT coupled with fixed reduction gearbox, while having long run the temperature of CVT unit increases so much that it hinders the efficiency. The main heat generation sources in the CVT chamber is the engine, friction between belt and sheaves, and high ambient outside. It is learned that CVT working temperature should be reduced. Hence cooling was much required for optimum performance of our vehicle, implemented cooling system involves insulation of CVT from engine while having a passive heat exchanger using super absorbent polymer inside our vehicle to inject cool air on CVT and using insulating material on CVT cover to reduce the overall temperature, whereas passive heat exchanger cools down the injected air. All this leads to significant temperature drop in whole assembly.