Downpipe Back Exhaust - Single - Duramax
Downpipe Back Exhaust - Single grouped by options for Duramax fitment.
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Dieselr aluminized downpipe back single—4″ system engineered for smooth flow, secure fit, and long-lasting corrosion-resistant strength.
Downpipe Back Exhaust - Single grouped by options for Duramax fitment.
Downpipe back exhaust for L5P Duramax 6.6L (2017–2019) with OEM 4-bolt flange. T409 stainless steel. Off-road only. No bungs. Built for airflow and performance.
Dieselr aluminized downpipe back exhaust — heavy-duty system built for stronger flow, precise fitment, and corrosion-resistant performance.
Custom fitment brief
Outline your vehicle, performance targets, and timeline. The build desk will confirm availability, pricing, and next steps in writing.
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