innovative solutions to the high performance automotive industry; axle oiling to accommodate high spring pressures, variable duration to assist with toque and vacuum, high flow push rod seats to keep rocker arms well lubed and unmatched metallurgy to assure a long lifter life. these are just a few of the innovations we currently offer. what you will find when you get your johnson lifters® is not only a sleek, lightweight, valve train component, but a component of the highest american quality you