Dual valve spring set for fast road/rally rpm and high valve lifts of up to 0.495". These are suited to 8000 RPM and give 200# seat pressure at .400" valve lift. Must be installed at 1.40"-1.42" fitted height on 1275 heads by shimming if necessary. Special Swedish spring steel-wire material. See additional information below for full description and installation instructions. Sold in a set of 16.
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