2014 Porsche 911 991 Carrera 4S Coupe H6 3.8L Performance Exhaust Parts

Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust. 10X Entries Into Our F80 M3 Sweepstakes

Brand:

ES#:

4715424

Mfg#:

044081LA01

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Starting at $57.57 USD

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Lifetime Replacement

Improve exhaust flow and sports car sound

Brand:

ES#:

3626953

Mfg#:

FSPOR991SHDR

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

Brand:

ES#:

5457431

Mfg#:

UVM.63MM.X2

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

Brand:

ES#:

5457438

Mfg#:

UVM.89MM.X2

Improves exhaust tone and saves weight by replacing the factory center muffler

Brand:

ES#:

3626910

Mfg#:

FSPOR991CMBX

ON SALE! SAVE 10%

$1653.99

This product was last offered at the strikethrough price on
09-02-2026

$1488.56 USD

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Lifetime Replacement

2.5" Inlet - 3.5" Outlets - 1x1 Carbon Fiber Sleeves

Brand:

ES#:

5457366

Mfg#:

VTD.TIP.SD.63MM

2.5" Inlet - 3.5" Outlet - Single Wall Black

Brand:

ES#:

5457388

Mfg#:

VTDTIPSW2535BLK

2.5" Inlet - 3.5" Outlet - 1x1 Carbon Fiber Sleeve

Brand:

ES#:

5457368

Mfg#:

VTDTIPSLVE2535RC

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

Brand:

ES#:

5457436

Mfg#:

UVM.76MM.X2

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

Brand:

ES#:

5457433

Mfg#:

UVM76MMDUALOUTX2

2.5" Inlet - 4.0" Outlet - 1x1 Carbon Fiber Sleeve

Brand:

ES#:

4738947

Mfg#:

VTD.TIP.SLVE.25.

ON SALE! SAVE 20%

$129.99

This product was last offered at the strikethrough price on
08-25-2026

$103.99 USD

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on orders $49 and up

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

Brand:

ES#:

5457426

Mfg#:

UVM63MMTSTYLEX1

2.5" Inlet - 4.0" Outlet - Raw Burnt Titanium

Brand:

ES#:

5457398

Mfg#:

VTDTIPSW2540TIBR

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

Brand:

ES#:

5457423

Mfg#:

UVM63MMDUALOUTX1

2.5" Inlet - 3.5" Outlet - Forged Carbon Fiber Sleeve

Brand:

ES#:

5457367

Mfg#:

VTDTIPSLVE2535FC