The internal combustion engine is often considered to be a large air pump. As the part of the engine where airflow is most critical, the cylinder head is key to the performance of an engine. The shape of the combustion chamber, intake ports and passages (and to a lesser extent the exhaust) determines a major portion of the volumetric efficiency and power output of the engine. And nobody designs and engineers more power-efficient cylinder heads than RHS®.

Since 1967, Racing Head Service® has been a premiere name in cylinder head performance. A member of the COMP Performance Group™, RHS® produces a wide variety of cylinder heads from stock replacement to hardcore racing, all to maximize the performance of each unique engine application. The industry’s largest and most capable engineering team works hand-in-hand with the most sophisticated airflow technology in the aftermarket to produce the best possible products.

A company founded by racers, RHS® understands the importance of cylinder head horsepower. Using advanced CAD software, exclusive production methods and joint R&D efforts with valve train engineers at COMP Cams®, RHS® is able to develop the most innovative cylinder heads seen in the aftermarket. And with more standard features than any cylinder head in the aftermarket, our cylinder heads are guaranteed to improve your performance – right out of the box!