T The research was conducted because HHO is a gas that comes from electrolysis of water can be used as an environmentally friendly fuel that can improve performance on motorcycle engines. The research method is designing and developing Dry Cell Type HHO Generator and then measuring the rate of gas produced, then HHO gas is inserted into the combustion chamber of a motorcycle engine through an air filter, the motorbike is then connected to the Dynotest device to measure its power and torque. The results obtained in the HHO Type Drycell Generator is that the rate of gas produced is affected by the molarity of the electrolyte solution and the electric current given, and the greatest increase in power and torque is at the largest gas rate given to the motorcycle engine.