Kooks 3" x 2-1/2" (OEM-style outlet) stainless competition-only connection pipes. Competition only — no cats; off-road / track use only. 2004-specific — the LS1 GTO uses different exhaust routing than the 2005-2006 LS2 GTO, so these are NOT cross-compatible. Stainless construction handles thermal cycling and corrosion.
Fits 2004 Pontiac GTO (LS1 5.7L). Requires Kooks long tube headers (PN 24102400). For 2005-2006 LS2 cars, use PN 24123100 instead.
Kooks Headers & Exhaust has been hand-building stainless headers and exhaust systems in Statesville, North Carolina since 1962. Every connection pipe is welded by experienced fabricators in the same shop where the company's racing roots were established. Stainless construction handles thermal cycling and corrosion.
Pair with Kooks GTO long tubes (PN 24102400) upstream and the OEM cat-back downstream.
