Active Autowerke Valved Rear Exhaust - M340i / M440i w black tips (11-089B) 17785 and unlike other manufacturers who

and unlike other manufacturers who only partially shield the filter from hot under hood air

featuring factory-matched flanges at the inlets

Special Comments: 2WD 2001 GMC Sonoma Engine: 4

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Active Autowerke Valved Rear Exhaust - M340i / M440i w black tips (11-089B) 17785 and unlike other manufacturers whoThe Active Autowerke Valved Rear Exhaust for the BMW M340i and M440i enhances the factory system by delivering a deeper, more aggressive sound while maintaining the stock valve control for optimal flow and resonance. Designed specifically for G series M340i and M440i models, this axle back exhaust replaces the rear section, requiring cutting of the stock midpipes. It retains the factory actuator for valve operation and features quad black exhaust tips