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Stainless Works long-tube headers for 2011–2014 Mustang GT are built with 1-7/8" primaries, a 3" X-pipe and 3" lead pipes with high-flow catalytic converters that connect to their exhaust. Tig-welded 304 stainless construction, 3/8" flanges and slip-fit collectors with merge spikes ensure a durable, bolt-on replacement for factory manifolds and cats when completing a full 3" system.
Stainless Works 2011-14 Mustang GT Headers 1-7/8in Primaries 3in X-Pipe High-Flow Cats
