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Performance exhaust valve to fit GTA Twin Plug engines. 41mm diameter head, 8mm diameter stem, 45 degree seat angle for improved top end power. Price is per valve. Please note that original GTA...
Valve guide to fit FIA specification GTA inlet valves with 8mm stem diameter. Please note that original GTA valves were 8.5mm stem, we use an 8mm valve as it will improve intake flow.