Spoon valve spring kit are designed to provide smooth operation and intake/exhaust flow. The Spoon valve spring kit uses springs that are stiffer, stronger, and lighter than OEM factory units. The Spoon valve springs are tested to ensure each spring has the same spring rate and weight, thus making the set rate and weight balanced. Consequently, the engine can rev higher and is safer and smoother at high rpm. Spoon valve spring weighs 148.4g versus 186.3g stock. Best used with Spoon camshafts and iL4 Performance port/polished cylinder head.
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