Super Stock 120 cubic-inch ~ 1998 cc two-stroke powerhead with 3 twin choke carburettor. Runs with unleaded 98 octane commercial fuel, capable of reaching 210 HP at the top speed of 180-190 km/h when driven in a straight line. During racing conditions on a multi-pin circuit, the average speed is around 170 km/h. Top RPM is measured at approx. 9000-9200. The SST-120 powerhead is equipped with a direct water-cooling system that uses water collected by the gearbox.