King HP-Series rod bearings, featuring the Alecular metal structure, were developed mainly for drag race applications needing a material harder than the Babbitt top layer. These applications demanded a structure that could withstand high loads for short durations and still offer higher embeddability and compatibility. In response, King developed the HP-Series featuring the Alecular metal structure.HP Series Alecular bearings are particularly suitable for the following cases:
When a tri-metal bearing's Babbitt overlay extrudes over the sides, migrates to one end, or is physically removed by the crankshaft
When the intermediate layer of a tri-metal bearing is exposed, damaging the crank journal and requiring expensive grinding or replacement
When contaminants enter the oil stream, scratching and damaging the crankshaft journals
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