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Porsche 997.1 Carrera Exhaust Mufflers & Race Headers - Yonristic Performance

Porsche 997.1 Carrera Exhaust Mufflers & Race Headers - Yonristic Performance

SKU YR-0786-POR-AIS
by Yonristic Performance
Save $ 1,000.00 Save $ 100.00
$ 2,699.00
$ 2,699.00 - $ 4,999.00
$ 2,699.00
$ 2,599.00
$ 2,599.00 - $ 3,999.00
$ 2,599.00

Give your 997 the voice it should have worn from day one. The Yonristic system replaces the bulky stock center canister with a muffler-less X-pipe and tuned high-flow cans, feeding compact side mufflers and quad tips for a factory+ soundtrack—deep and composed at cruise, razor-clean and aggressive when you push. Built from 304 stainless or aerospace-grade titanium, 3D-scanned for a perfect fit, and fully PSE-valve compatible, it sheds weight, sharpens response, and unlocks real 911 character without the drone.

Center X clarity. Tuned side cans. True PSE valve integration.

The 997.1 Carrera family (3.6/3.8 NA flat-six) is one of the sweetest-revving 911s ever built, but the factory exhaust keeps a lid on its character. The big center canister and conservative cross-over dull throttle response, flatten the midrange, and leave the note a little hollow—more hush than heartbeat. Our Yonristic system replaces the entire center section with a true X-pipe core flanked by tuned high-flow cans, then routes to compact side mufflers that preserve tone while controlling volume. The result is the sound the 997 deserves: cleaner harmonics, fuller midrange, and a hard-edged, motorsport top end—without the droning that plagues straight-through conversions.

Key Features:

Configuration:
Muffler-less Center X-Pipe with Dual High-Flow Resonators and Compact Side Mufflers – Tuned for Balanced Tone and Zero Drone

Valve Control:
OEM-Style Vacuum Valves – Plug-and-Play with Factory PSE System or Yonristic Remote Valve Controller

Materials:
AISI 304 Stainless Steel (Standard) / Optional Heat-Treated Titanium

Manufacturing:
Digitally 3D-Scanned for Perfect OEM Alignment – CNC-Machined Flanges & Hangers

Welding:
Handcrafted TIG Welds, Back-Purged for Internal Flow Precision and Longevity

Performance Gains:
+8–12 WHP / +8–12 lb-ft Torque (Cat-Back Only)
+15–25 WHP with 200-Cell Sport Cats & ECU Tune

Weight Reduction:
Up to 35% Lighter than OEM System (Titanium Version up to 50%)

Sound Profile:

  • Valves Open: Sharper, higher-pitched flat-six wail with motorsport overrun crackles
  • Valves Closed: Refined and deep with zero cabin drone

Tip Options:
Quad ips – Polished / Burnt / Satin Black / Carbon Fiber Finishes

Installation:
100% Bolt-On, No Cutting or Welding – Reversible Fitment Using Factory Mounts

Compatibility:
Direct fit for OEM manifolds and catalytic converters – compatible with Yonristic sport cats or aftermarket headers

Vehicle Fitment:

Porsche 997.1 Carrera / Carrera S / Carrera 4S / Carrera GTS (2005–2008, 3.6L & 3.8L Flat-Six)

Design & Sound

  • True Center Cross: Positioned at the pulse-exchange sweet spot, the X equalizes pressure between banks, improving scavenging and sharpening the engine’s attack as revs rise.
  • Tuned High-Flow Cans (center): Sized and placed to knock out the 997’s boom frequencies; they smooth the note under cruise while keeping the exhaust path free-flowing.
  • Compact Side Mufflers: Unpacked, straight-through internals maintain velocity and give the car a rich, classic 911 timbre at light load with a fierce wail when you lean on it.
  • No Drone Tuning: Geometry and can volumes are modeled around cabin resonance zones, so highway cruising stays calm while exterior character remains aggressive.

Valve Control — OEM behavior, plug-and-play

We retain the factory PSE valve locations and actuator mounts; on PSE-equipped cars the behavior is fully preserved. For non-PSE cars, our optional remote valve kit gives you two characters on demand—refined for long trips, or wide-open for back roads.

Performance

On a healthy 997.1, a well-designed X-pipe cat-back typically delivers +8–12 whp and +8–12 lb-ft with noticeably crisper throttle response. Pairing our system with 200-cell sport cats and a quality ECU calibration commonly lifts total improvements into the +15–25 whp range, with a broader, cleaner pull to redline. The headline, however, is tone quality and weight: deleting the bulky center canister drops mass and replaces the muted stock voice with a sharp, classic flat-six cry.

FAQ

What sets Yonristic Performance exhaust systems apart?

Our exhaust systems are crafted from aerospace-grade titanium and T304 stainless steel, using vacuum oxygen-free TIG welding. Each setup is designed for optimal flow, aggressive sound, and unmatched weight reduction — a result of 13+ years of performance engineering experience.

Do your systems come with an active valve system?

Most of our systems include Yonristic’s remote-controlled active valve system for full manual sound control. OEM valve options are available by request, though they typically do not allow full valve opening.

Is installation bolt-on? Will it fit my vehicle?

Yes. All our systems are designed for direct bolt-on installation unless noted otherwise. No welding or modification is required.

How long does it take to receive my order?

In-stock products: Delivered in 2–5 business days.
Made-to-order products: Delivered in 14–18 business days.

Do you offer free shipping?

Yes! We offer free shipping within the U.S. and Canada on all orders.

Do you ship internationally?

Absolutely. We ship worldwide. Shipping rates and import duties vary by destination and are calculated at checkout.

What’s your return policy?

Unused, non-customized products: Returns accepted within 7 days of delivery.
Custom or made-to-order products: Non-refundable and non-returnable.

Used products: Not eligible for return.
Damaged or incorrect items: Contact us within 48 hours of delivery with:
- Proof of damage

- Proof of packaging

- Installation photos

- Serial number (if applicable)

Are there restocking fees?

For general returns of unused items:

- Within 45 days: 40% restocking fee

- Within 90 days: 60% restocking fee

- Over 90 days: Returns not accepted

Do your products come with a warranty?

Yes. All Yonristic exhaust systems are backed by 2-years warranty against manufacturing defects. Improper installation, misuse, or modification will void the warranty.

What payment methods are accepted?

We accept all major credit cards, PayPal, and offer financing through Affirm and Shop Pay Installments.

Can I finance my purchase?

Yes — split your payment into monthly installments with Affirm or Shop Pay. Pre-qualification is fast and doesn’t affect your credit score.

Do you offer installation?

We offer professional installation at our shop partners. Or, have it installed at your trusted local performance shop — all necessary hardware are included.

Are your exhausts street legal?

Our systems are intended for off-road or track use only, unless explicitly stated. Please check your local emissions laws before purchase.

Need help choosing the right setup?

Message us anytime via our Contact Us page or Instagram. We'll guide you to the best system for your build and driving goals.