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Fabspeed Center Muffler Bypass X-Pipe Porsche 991.1 Carrera (2012-2016)

SKU: FS.POR.991.CMBX
Price
$1,653.95
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

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Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

FAQ

Shipping Information
For items that are in stock, purchases made after 9am EST will be usually be shipped out in the next 1-2 business days. Please inquire to confirm lead times if you have specific time constraints. Orders will be sent via signature required at our discretion unless otherwise requested.

International Shipping
Any and all customs duties, taxes, import fees, and/or tariffs assessed in connection with the purchase shall be the sole responsibility of the customer/end user.

Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. All returns are subject to a restocking fee based on item and package condition. Buyer is responsible for paying for return shipping costs. If you need a return label, we will email you a return label and deduct cost from refund. Original shipping costs are not refundable. Special order items are not eligible for return.

Cancellation Policy
In order to cancel your order you must email within 24 hours of placing your order or before your order has shipped, whichever occurs first. Special order items are not eligible for cancelation.

Exchange Policy
We have a 30-day exchange policy, which means you have 30 days after receiving your item to request an exchange. To be eligible for an exchange, your item must be brand new in box. Buyer is responsible for paying all shipping costs to exchange product.

Product Description

 

 

The Fabspeed Center Muffler Bypass X-Pipe eliminates the restrictive factory center muffler on 2012–2016 Porsche 991 Carrera (non-valved models) to unlock a more aggressive exhaust character, improved power delivery, and reduced weight. By replacing the stock center section with a lightweight, high-flow X-pipe, this upgrade increases exhaust evacuation, sharpens throttle response, and amplifies the natural flat-six sound — giving your 991 a more visceral presence without altering the side mufflers. Constructed from CNC mandrel-bent 304 L stainless steel, it’s designed for direct bolt-on installation and durable long-term use. This non-valved X-pipe is ideal for Carrera owners seeking a performance-oriented mid-section upgrade that complements street or track setups.

Fitment Notes

  • Fits 2012–2016 Porsche 991 Carrera models without factory valved (PSE) exhaust only.

  • 2012 model year caution: 2012 could be either 997.2 or 991 — verify chassis before ordering.

  • Replaces the factory center muffler only; retains side mufflers and factory exhaust tips.

  • Not compatible with factory valved (PSE) center muffler exhaust — a separate valved version exists for PSE cars.

Included

  • High-flow center X-pipe assembly.

  • Replacement section hardware and clamps for bolt-on fitment.

Product Specs

  • Material: CNC mandrel-bent T304L Stainless Steel for durability and corrosion resistance.

  • Weight Savings: Approx. -12 lbs vs factory center muffler.

  • Performance Gains: Dyno-proven approximately +16 whp and +14 ft-lbs torque on non-valved Carrera.

  • Flow Design: Straight-through X-pipe to improve exhaust scavenging and mid-range torque.

  • Fitment: Direct bolt-on replacement for the restrictive factory center muffler.

  • Warranty: Backed by the Fabspeed Lifetime Warranty.

Product Features

  • High-Flow X-Pipe Design: Improves exhaust scavenging and flow compared to stock center muffler, leading to stronger torque and horsepower delivery.

  • Enhanced Exhaust Tone: Significantly more aggressive and sport-oriented sound compared to the OEM center muffler.

  • Weight Reduction: Shaves roughly 12 lbs from the exhaust mid-section for better throttle response and reduced rear mass.

  • Mandrel-Bent Stainless Steel: Smooth bends minimize restrictions and durability for long-term use.

  • Bolt-On Installation: CNC precision and direct replacement design eliminate cutting or fabrication.

  • Lifetime Warranty: Confidence-inspiring coverage on materials and craftsmanship.