Currently, a two-stroke motorbike is only in the interest of some people. Especially people who like motorbike racing and motorcros. Because the 2-step motor is known to have great power and torque big. The working principle of a 2- stroke motorcycle is still the same as it used to be, which is changing energy heat becomes mechanical energy. Types of fuel and types of side oil are very important in the process combustion because it greatly affects engine performance (power and torque). Researchers study more continued with this by displaying data related to the effect of use 3 variation of side oil to engine performance (power and torque) and fuel. The research method was carried out by experimental method by replacing 3 variations of side oil (Shell Advance SX, Mesrania 2T Sport, Ultraline Racing 2T) on 135cc Rx-king motorcycles with AKRA 92 fuel. In viscosity testing based on ASTM D 2270 standard that is using testing with NDJ 8S. In testing engine performance (power and torque) based on SAE J1349 DEC 80 that is using dynotest. In the study of fuel consumption based on SAE J1082-200802 that is carried out by road test with a speed of 40 km/h at a distance of 5 km. Power testing results for oil Shell Advance SX is 16.62 HP for Mesrania 2T sport oil which is 15.34 HP, and for oi Ultraline Racing 2T is 16.02 HP. The torque test for Shell Advance oil is 15.38 N.m, oil Mesrania 2T Sport is 15.35 N.m and Ultraline Racing 2T oil is 15.64 N.m. From the test results Shell Advance SX power and oil torque can maintain engine performance, due to torque and power maintain at high speed. This is caused by Shell Advance SX oil having viscosity big index. In testing the most efficient fuel consumption in Mesrania 2T oil Sport is 0,374 ml /s because oil mesrania has a stable viscosity change. Results research that low kinematic viscosity and large index viscosity will produce the best power and torque.