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The GSC Billet S1 camshaft set is a billet cam package for Mitsubishi Evolution models 4–8 with the 4G63 engine, listed with 268/268 lobe specifications. Offered as performance-oriented billet S1 cams, this kit updates valve timing hardware for modified or restored 4G63 applications. It’s presented for direct application to supported Evolution models where upgraded cam profiles are desired.
GSC P-D Mitsubishi Evolution 4-8 4G63 S1 Cams 268/268 Billet
