2014 Porsche 911 991 Carrera 4 Coupe H6 3.4L
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.
10X Entries Into Our F80 M3 Sweepstakes
Improve exhaust flow and sports car sound
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
For those looking to increase power and bring out the note of their 3.4L powerplant, without turning their backs on perfect daily-drivability and Porsche sophistication.
2X Entries Into Our F80 M3 Sweepstakes
Constructed from T-304 Stainless Steel, the AWE Porsche 991 Carrera Performance Exhaust shows maximum gains of 29hp and 33tq at the crank and weighs in at 12lbs less than the stock unit!
2X Entries Into Our F80 M3 Sweepstakes
This product is only confirmed to fit non-PSE vehicles at this time.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-19-2026
Lifetime Replacement
100% handcrafted in Italy. Stainless steel construction. Legendary sound!
Constructed from T-304 Stainless Steel, the AWE Porsche 991 Carrera Performance Exhaust shows maximum gains of 29hp and 33tq at the crank and weighs in at 12lbs less than the stock unit!
2X Entries Into Our F80 M3 Sweepstakes
This product is only confirmed to fit non-PSE vehicles at this time.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-19-2026
Lifetime Replacement
2.5" Inlet - 3.5" Outlets - 1x1 Carbon Fiber Sleeves
Improves exhaust tone and saves weight by replacing the factory center muffler
Lifetime Replacement
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
3.0" Inlet - 3.5" Outlet - 1x1 Carbon Fiber Sleeve
