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The QTP AR3 weld-on muffler is a 4.0-inch 304 stainless steel unit suited to custom exhaust setups or rear replacements. Made from 304 stainless, it installs by welding into 4" piping runs, giving fabricators a durable muffler option that supports larger-diameter exhaust systems and helps manage tone and flow on high-capacity builds without relying on stock components.
QTP 4in Weld-On 304SS AR3 Muffler
