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As the lift rates on the racing cams get extreme, the flat tappet lifters want to start digging into the face of the lobe instead of sliding up and over. As a result, lifter technology has made some pretty significant advancements. The idea is to make the lifter as hard and slick as possible so that it will slide with no deflection to limit the chances of grinding against the lobe. This lifter looks pretty standard at first glance, but it’s constructed from tool steel and given a DLC (diamond-like carbon) coating to make it extremely tough. View Related Article
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