Cat & DPF Race Pipe - Duramax
Cat & DPF Race Pipe grouped by options for Duramax fitment.
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Downpipe Back Exhaust - Single grouped by options for Duramax fitment.
Cat & DPF Race Pipe grouped by options for Duramax fitment.
Dieselr 4" aluminized cat back single for 2011–2015 GM 6.6L Duramax — clean fit, strong flow, and long-lasting aluminized steel build.
Dieselr aluminized downpipe back exhaust—4" 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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