Aluminum Rocker

There are too many low price aluminum rocker arms in today's market. Those rocker arms are made from aluminum alloy but without specify how? For racing application to withstand high spring pressure and RPM, extrusion technical of aluminum alloy is must. We have study and analysis to find these low price aluminum rocker arms are made by DIE CAST. This is cost saving process to form aluminum products. This is the reason why the price is so low. As you got what you paid for these Die Cast aluminum rocker arms have about 12,000 PSI tensile strength compare with Extrusion process to have over 60,000 PSI tensile strength. This is reason why the Die Cast rocker arms are such heavy and has thick front arm to avoid breakage during operation. Beware the poor quality rocker arm. Check with supplier their rocker arm is Die Cast or Extrusion before you buy.