Each 206 racing engine is assembled by hand in Milwaukee, WI. using tooling and dies specifically for racing for unparalleled repeatability. Factory sealed short-block with ground cam and controlled piston pop-up (reducing compression variance) Simplified IKF/WKA rule set designed to maintain a stock configuration right down to the factory shipped carburetor jets. This is NOT today’s standard Animal rule set. LO206 engine package includes: Engine, Air Filter, Clutch Guard, Engine Mount, Throttle Cable, Exhaust Gasket, Exhaust Header, and Silencer.