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Stainless Works long-tube headers for 2011–2014 Shelby GT500 provide a direct-fit replacement that improves exhaust flow and pairs with factory or Stainless Works systems. These 1-7/8" primaries are TIG-welded from 304 stainless with 3/8" flanges and oval ports matched to the factory head. The kit includes 3" OD slip-joint collectors with merge spikes, 3" catted lead pipes and a 3" H-pipe for a complete connection to the stock exhaust.
Stainless Works 2011-14 Shelby GT500 Headers 1-7/8in Primaries High-Flow Cats 3in X-Pipe
