Simply the most power available from a 124cc kit. Takegawa SP has developed this double overhead cam, 54mm bore and stroke race engine with 12.1:1 compression. 4 valves - 22mm intake, 19mm exhaust. Available in two or three point supported crankshaft for extra durability. Ceramic coated aluminum HA cylinder with allowance for thermo sensor. The best of the best! Complete installation instructions come with this kit.