Analysis of information sources in references of the Wikipedia article "Cam follower" in English language version.
After years of experimentation with different materials and manufacturing processes, it's developed the EZ Roll Red Zone needleless, single roller bushing design that replaces the roller needles. Isky claims "they last four times longer, and love high heat and low oil, making them perfect even for a street car idling in traffic."
Crower's new Endura Max roller lifters eliminate any chance of a needle bearing failure ruining your night and slapping you with an expensive engine rebuild. And Crower can guarantee it because it has done away with the needle bearings completely. The Endura Max lifters feature a bushed roller that utilizes high pressure pin oiling to reduce friction between the roller and the bushing. Crower says the bushed lifter allows greater load handling for aggressive camshaft profiles and are fully rebuildable.
