7 all-terrain vehicle parts, namely, pistons, piston rings, piston ring clips, piston wrist pins, piston skirts, piston pins, piston bearings, crankshafts, crankshaft bearings, crankshaft connecting rods, crankshaft stroker plates, assembled crankshafts, carburetors, carburetor jet kits comprised of pilot jets, main jets and carburetor needles, gaskets and clips, carburetor needles, carburetor idle screws, carburetor boots, carburetor air ducts, intake manifolds, intake reed spacers, billet intake manifolds, boost bottles for engine manifolds, exhaust manifolds, exhaust systems comprised of tuned exhaust pipes, silencers and mounting hardware, exhaust pipes, exhaust sound silencers, engine mufflers, water pumps, water pump impellers, water pump billet impellers, water pump impeller shaft bearings, air filters, air filter dust bag pre-filters, oil filters, engine throttles, throttle actuator cables, throttle override eliminator kits comprised of throttle cables, carburetor caps, screws and lock nuts, electronic ignitions, ignition coils, spark plugs, ignition distributors