Collection: Pontiac GTO 2004-2006 Exhaust Parts + Upgrades
Plan your exhaust project with Pontiac GTO 2004-2006 exhaust parts and upgrades. Whether you're replacing worn components or choosing a different exhaust note, compare systems around your exact model year, existing connections, and everyday driving preferences.
Choose the sound and configuration for your build
When comparing cat-back systems, mufflers, exhaust tubing, or tips, review pipe diameter, material, connection style, and included hardware. Consider cabin resonance and cruising sound alongside exterior volume. Sound clips can help you compare options, but the engine combination and other exhaust components can change the result.
Check how the system connects
Review compatibility with your existing manifolds or headers, intermediate pipes, flanges, and hangers. Confirm whether installation requires adapters, cutting, welding, or additional clamps and gaskets. For header projects, check engine application, steering and chassis clearance, sensor provisions, and connection requirements before choosing supporting exhaust parts.
Will these exhaust parts fit my Pontiac GTO?
Confirm your 2004, 2005, or 2006 Pontiac GTO's current exhaust layout, rear bumper openings, transmission, and previous modifications. Check tip placement and clearance around the body, drivetrain, fuel lines, and suspension. Do not assume that components designed for different model years or aftermarket systems connect without modification.
Review each manufacturer's application notes, installation instructions, and intended-use restrictions before ordering. Choose a coordinated combination and have the installed system checked for secure mounting, clearance, and leaks before driving.
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SPDZ1 GM SQUARE - PRIMARY O2 EXTENSIONS 24" (2009-2015 CTS-V / 2004-2006 GTO / 2008–2009 Pontiac G8) - Pair of Harnesses
Regular price $54.99 USDRegular price$39.99 USDSale price $54.99 USD -
Stainless Works 2004 GTO 3in Catback Chambered Mufflers X-Pipe Wide Oval Tip
Regular price $1,695.00 USDRegular price$1,695.00 USDSale price $1,695.00 USD -
Stainless Works 2004 GTO 3in Catback Chambered Mufflers X-Pipe Slash Cut Tips
Regular price $1,695.00 USDRegular price$1,695.00 USDSale price $1,695.00 USD -
2005 Pontiac GTO 6.0L Exhaust Manifold Gasket
Regular price $15.49 USDRegular price$18.64 USDSale price $15.49 USDSale -
Stainless Works 2005-06 GTO Headers 1-3/4in Primaries 3in High-Flow Cats
Regular price $2,048.20 USDRegular price$2,156.00 USDSale price $2,048.20 USDSale -
Stainless Works 2005-06 GTO 3in Catback Chambered Mufflers X-Pipe
Regular price $1,860.10 USDRegular price$1,958.00 USDSale price $1,860.10 USDSale -
Kooks 05-06 Pontiac GTO LS2 6.0L 3in x 3in OEM Cat SS Exhaust Conn. Pipes
Regular price $1,232.70 USDRegular price$1,494.18 USDSale price $1,232.70 USDSale -
Borla 05-06 Pontiac GTO Coupe 2dr 6.0L 8cyl AT/MT 4spd/6spd RWD SS Catback Exhaust w/ inXin Pipe 140165
Regular price $1,597.99 USDRegular price$1,789.99 USDSale price $1,597.99 USDSold out -
Kooks 05-06 Pontiac GTO Base 1-7/8 x 3 Header & Catted GTO Conn Kit
Regular price $2,431.61 USDRegular price$2,947.40 USDSale price $2,431.61 USDSale -
Kooks 05-06 Pontiac GTO LS2 6.0L 3in SS Exhaust
Regular price $2,051.41 USDRegular price$2,486.56 USDSale price $2,051.41 USDSale -
2005-2006 Pontiac GTO Muffler Delete Dual Black Tips Axle Back Exhaust
Regular price $289.98 USDRegular priceSale price $289.98 USD -
Stainless Works Pontiac GTO 2005-2006 Exhaust Chambered (w/x-pipe)
Regular price $1,860.10 USDRegular price$1,958.00 USDSale price $1,860.10 USDSale -
2005-2006 Pontiac GTO Straight Mid Pipe Exhaust
Regular price $320.98 USDRegular priceSale price $320.98 USD -
2005-2006 Pontiac GTO 6.0L 3" Catless Downpipe (Race Part Offroad Use Only)
Regular price $210.98 USDRegular priceSale price $210.98 USD -
2005-2006 Pontiac GTO Muffler Cat Back Exhaust
Regular price $419.98 USDRegular priceSale price $419.98 USD -
2005-2006 Pontiac GTO Muffler Delete Dual Tips Axle Back Exhaust
Regular price $279.98 USDRegular priceSale price $279.98 USD
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