GSC P-D Toyota Supra/BMW B58 / BMW M3/M4 S58 Chrome Polished 28.5mm Head Exhaust Valve - Set of 12

GSC P-D Toyota Supra/BMW B58 / BMW M3/M4 S58 Chrome Polished 28.5mm Head Exhaust Valve - Set of 12

Marsoni

M251S

$209.23

Get it in 3 business days with 1 day shipping. Friday, May 29

GSC P-D Toyota Supra/BMW B58 / BMW M3/M4 S58 Chrome Polished 28.5mm Head Exhaust Valve - Set of 12SKU: 2091 12 GSC Power Division Chrome Polished 28. 5mm Head Exhaust Valve Set for 2019 2025 Toyota Supra BMW B58 BMW M3 M4 S58 This GSC Power Division set includes 12 chrome polished 28. 5mm head exhaust valves designed for Toyota Supra A90 BMW B58 and BMW M3 M4 S58 engines. Crafted from premium stainless steel these valves handle high heat and pressure for reliable power gains in turbocharged setups. They deliver smooth exhaust flow and long service

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The plates have a tiny amount of twist in the center and quite a bit of doming when flexed. While the outer edges are entirely floppy. Most of the center is smooth, but there are rough patches that flake off paper pieces when rubbed with a spoon or from a lot of moisture from food. The flat surface (not the inner walls) was able to withstand still water for about 10 minutes before weakening, so I wouldn't use it for wet or very moist foods.

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Reviewed in the United States on May 28, 2026