Brian Crower exhaust valves for Toyota 1JZ-GTE and Lexus 1JZ-GE are specified at 31.0mm with a +1.0mm head diameter. These exhaust valves are offered for the 1JZ family as replacement components intended for heads that require the stated valve size, and are suitable for engine assembly or valvetrain refresh tasks where the listed dimensions match the cylinder head requirements.
Brian Crower Toyota 1JZGTE/Lexus 1JZGE 31mm (+1.0mm Head Dia) Exhaust Valves