Intake racing valve x 12. Exhaust racing valve x 12. Intake valve (mm): Head Dia 34.50 + 0.5 / Stem Dia 5.97 / Length 103.15. Exhaust valve (mm): Head Dia 30.00 + 0.5 / Stem Dia 5.97 / Length 103.70. and exit the combustion chamber as the valve extends.
