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Performance exhaust valve to fit 2000 engines. 41.2mm diameter head - 1mm larger than standard - and 9mm (standard) valve stem diameter for best low end torque but with 45 degree seat angle for...
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.