This kit allows you to can either pedal for riding your bike as normal, or release the clutch lever to start the motor with no pull starting of engine required. By just simply pressing the kill switch, you can power off the engine and stop the bike. SPECS Engine Type: 80cc, 2 stroke Single Cylinder Air-Cooled Rated Power Rotary Speed: 2.5Kw/5000Rpm (3 horsepower) Max Power: 3.5Kw/6000Rpm (5-6 Horsepower).