A custom ground camshaft can be the component that maximizes the performance from your engine combination and Erson’s custom camshafts can deliver the goods.
Ground on premium American-made cores and featuring superior straightness, profile accuracy, surface finish and base circle runout, every Erson custom ground camshaft is Cam-Pro certified, and documentation is included with the cam when it is shipped.

For more info: http://www.pbm-erson.com/