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Fabspeed Center Muffler Bypass Porsche 991 GT3 / GT3 RS (2014-2019)

SKU: FS.POR.991GT3.CMBP
Price
$2,295.95

Select Tips:

Polished Stainless Steel
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

This Product Qualifies for Free Shipping

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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

 

 

Replace the failure-prone stock rear muffler on your Porsche 991 GT3 or GT3 RS with Fabspeed’s Center Muffler Bypass Pipe. This high-flow stainless steel unit improves exhaust scavenging, sheds approximately 10 lbs from the rear, and delivers a richer, more aggressive exhaust tone while retaining the factory valve functionality for controlled sound levels.

Fitment Notes

  • Fits all Porsche 991 GT3 / GT3 RS models from 2014-2019. 

  • Designed to work with factory headers, catalytic converters, and side mufflers. 

  • Retains the factory valve system and Sport Mode control button when used with OEM side mufflers.

  • Direct bolt-on installation replacing the center muffler section; no cutting required.

Included

  • Center bypass pipe assembly in T304 stainless steel

  • Choice of 4″ Deluxe dual style tips (finish options available) included. 

  • All necessary mounting hardware and gaskets.

  • Detailed installation instructions.

Product Specs

  • Construction: 14-16 gauge T304 stainless steel.

  • Weight reduction: Approx. 10 lbs (4.6 kg) removed from the rear of the vehicle. 

  • Design: “Talk-pipe” blending right and left cylinder banks for smoother, more unified exhaust tone. 

  • Finish options: Multiple tip finishes available (polished stainless, Carbon Fiber, brushed, etc.). 

Product Features

  • Improved Flow & Response: Replaces the restrictive factory muffler with a freer-flowing design, improving throttle response and exhaust character.

  • Weight Savings at the Rear: By dropping ~10 lbs from the rear, it contributes to better vehicle dynamics and rear-end responsiveness.

  • Aggressive Yet Manageable Sound: Retains factory valve functionality so you can maintain everyday civility or unleash a sportier tone when desired.

  • High-Quality Construction: Built from premium T304 stainless, TIG-welded and designed for long-term durability.

  • Seamless Integration: Maintains compatibility with OEM exhaust components and retains the Sport mode button functionality.

  • Lifetime Warranty: Purchase confidence with Fabspeed’s lifetime warranty backing.