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Stainless Works long-tube headers for 2011–2014 Mustang GT feature 1-7/8" primary tubes, a 3" X-pipe and 3" diameter catted lead pipes that mate to the factory connection point. Tig-welded from 304 stainless with 3/8" thick flanges and slip-fit collectors, this kit replaces factory manifolds, catalytic converters and the H-pipe with a bolt-on system backed by a Limited Lifetime Guarantee.
Stainless Works 2011-14 Mustang GT Headers 1-7/8in Primaries High-Flow Cats 3in X-Pipe
