Seller notes

A lightweight valve spring kit must be used. Black Diamond - One pieced forged stainless steel valves impregnated by a special Germany process to improve wear properties and reduce friction. This process provides resistance to corrosion an wear that is superior to that of hard chromium and electrolysis nickel plating. Light and Strong - A combination of FEA stress analysis and flow bench testing of prototype valves allows engineers to optimally balance valve mass, strength and airflow characteri...

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