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Stainless Bros offers this 3.5-inch normally closed, boost-open exhaust valve in 304 stainless steel for larger-diameter systems. The valve stays shut until sufficient boost opens it, allowing selective exhaust routing in 3.5-inch piping. Its 304SS construction provides resistance to corrosion while enabling boost-actuated control for custom or performance-focused exhaust layouts.
Stainless Bros 3.5in Normally Closed / Boost Open 304SS Valve
