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The Spintron revolutionized pushrod testing in 1993, revealing serious deflection issues in conventional designs through laser tracking technology. Bob Fox's Trend Performance emerged from this breakthrough, developing superior one-piece double taper pushrods. Like mastering complex mechanics in Infinite Craft , Fox transformed inconsistent manufacturing into precision engineering, creating today's industry-leading 7/16-inch pushrod systems that ensure optimal valve train performance across various engine applications.