2004 Porsche 911 996 Carrera 4S Coupe H6 3.6L
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.
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Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Equal-length headers provide improved torque and equalized engine pulsing thanks to industry-exclusive mandrel-bent primary tubes
Lifetime Replacement
Loud and Aggressive recommended for track use only
For C4S Models Only - Must re-use Factory Tips
Lifetime Replacement
2.5" Inlet - 3.5" Outlets - 1x1 Carbon Fiber Sleeves
2.5" stainless steel mufflers for use with stock tips
This product was last offered at the strikethrough price on
11-08-2026
Lifetime Replacement
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
2.5" Inlet - 3.5" Outlet - Single Wall Black
2.5" Inlet - 3.5" Outlet - 1x1 Carbon Fiber Sleeve
2.5" Inlet - 4.0" Outlet - 1x1 Carbon Fiber Sleeve
Lifetime Replacement
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
3.0" Inlet - 3.5" Outlet - 1x1 Carbon Fiber Sleeve
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
