Cylinder Head-Valves, Camshaft-Intake Manifolds, 70cc ATVs & Dirtbikes

Cylinder heads, valves, camshafts, and intake manifolds are key top-end components that keep 70cc Honda-type ATVs and dirt bikes running smoothly. These parts control airflow, compression, and valve timing—three major factors in engine performance. When they become worn or damaged, riders may notice poor starting, reduced power, rough idle, or sluggish acceleration. Replacing these components helps restore strong, efficient operation on youth models from brands like TaoTao, Coolster, and SSR.