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's unique “Black Knight” valves (code: BK) feature a special coating that serves two purposes. First, the coating is designed to provide improved heat transfer. This promotes better valve train life. Secondly, the coating has proven to combat the problems associated with unleaded gasoline. In short, the Black Knight is what street performance enthusiasts have been waiting for! Black Knight valves are made in limited production runs and special ordering may be required. Carbon build-up is almost non-existent. Many available with single groove (code SGB). Fully swirl polished with Stellite tips.

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