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Performance inlet valve to fit GTA Twin Plug engines. 45mm diameter head, 8mm diameter valve stem, 45 degree seat angle for improved top end power. Price is per valve. Please note that original GTA valves were 8.5mm stem, we use an 8mm valve as it will improve intake flow. Classic Alfa production made in UK by leading valve manufacturer. Note that this valve is the maximum size allowable in FIA specification GTA engines.
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.
Performance inlet valve to fit 2000 engines. 45mm diameter head - 1mm larger than standard. 9mm (standard) valve stem diameter with standard 30 degree valve seat angle. The valve is also...
Valve guide to fit FIA specification GTA exhaust valves with 8mm stem diameter. Please note that original GTA valves were 8.5mm stem, we use an 8mm valve as it will improve exhaust gas flow.
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...