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The Supertech +1mm oversize black-nitrided exhaust valve set for BMW M50/M52/S50/S52 includes twelve valves oversized by 1.0mm for applications where port or seat work requires increased diameter. Supplied as a complete set, these nitrided exhaust valves provide a straightforward oversize replacement for the listed BMW engines.
Supertech BMW M50/M52/S50/S52 Black Nitrided Exhaust Valve - +1mm Oversize - Set of 12
