What is the Main components of the two stroke engine?

The crankshaft, pistons, cylinder block (with cooling fins- most two-stroke engines are air cooled), valves, camshaft, timing chain, carburettor, fuel pump and sparking plugs make up the essential body of the engine. There are also the spark plug leads, exhaust system, and (on a motorbike) the drivewheel that turns the driving chain that moves the rear wheels (N.B. most scooters don't have the latter, as they are direct drive). Two-stroke car engines have a more elaborate ignition system, featuring a distributor and ignition coil. A water-cooled two-stroke engine will also have a water pump and radiator too.