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The GSC Power Division exhaust valve set for 4B11T engines offers eight chrome-polished exhaust valves with 30mm heads (+1mm). Supplied as a set of eight, these +1mm valves provide a slightly larger head diameter than stock for applications that require increased valve sizing. The chrome-polished finish and explicit +1mm sizing simplify selection for builds needing this exact head dimension.
GSC P-D 4B11T 23-8N Chrome Polished Exhaust Valve - 30mm Head (+1mm) - SET 8
