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Supertech dual valve springs, set of 16 with a 30/21.80mm split and 13.2 lbs/mm rate, are intended for valvetrain stability under sport or race conditions. The springs offer defined dimensions and rate to match higher-lift camshafts and support reliable valve control at elevated RPM. They target builders needing consistent spring force and endurance in modified engines without altering head geometry.
Supertech Dual Valve Spring - 30/21.80mm-21.8/16.2mm - 22mm CB - Rate 13.2lbs/mm - Set of 16
