Aluminum Cylinder Heads Valves
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Here's a comparison of the valves. Ferrea stainless steel valves are used in the KRE heads in 2.11-/1.66-inch sizes. The valves that came out of the 6X heads measure 2.11/1.77 inches since the 6X was modified earlier to accept the larger 1.77-inch exhaust valve. View Related Article
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