Name: Fabspeed Porsche 991 GT3 / GT3 RS Side Muffler Bypass Pipes (2014-2016)
Brand: Fabspeed
Price: 1371.95 USD
Availability: InStock

Fabspeed Porsche 991 GT3 / GT3 RS Side Muffler Bypass Pipes (2014-2016)

$1,371.95

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Optimized design that replaces the heavy and restrictive factory side mufflers for improved exhaust flow, increased sound and weight savings.

Utilizing premium Helical valves along with the addition of O2 bungs, Fabspeed's Side Muffler Bypass Pipes provide the ultimate track solution for the 991 GT3 / GT3 RS. When accompanied with our new Long Tube Competition Headers, our Side Muffler Bypass Pipes allow the maximum amount of exhaust flow possible from the 991 GT3 / GT3 RS engine.

FEATURES:

Fits all Porsche 991 GT3 / GT3 RS vehicles (2014-2016)
Highest quality Helical valves
Includes O2 bungs for factory like functionality when paired with Fabspeed Long Tube Competition Headers
Saves 34 lbs from the rear of the vehicle
Replicates aggressive CUP car sound for the street
14-16ga T304 Stainless Steel construction
Simple bolt-on installation
All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

HELICAL VALVES

We chose to use Helical Valves on our 991 GT3 / GT3 RS track exhaust systems for their unprecedented quality - which have been proven by many OEM manufacturers such as McLaren, Ferrari, Lamborghini, and many more. Helical valves are an integral part of our Side Muffler Bypass pipes, opening and closing with precision to control the gas flow and optimizing engine back-pressure for improved performance. Helical's extensive experience in high-volume OEM automotive applications has led to standard features such as an extremely durable pneumatic actuator, precision flat sealing faces inside the valve, stiffening ribs and high-temperature bearings at both ends of the butterfly spindle.

O2 BUNGS

We relocated the O2 bungs from the collector of the headers to the Side Muffler Bypass Pipes in order to maintain factory-like functionality with our Long Tube Competition Headers - allowing them to read all cylinders while maximizing the performance of the collector. This design will replace our existing SMBP's allowing you to upgrade to our Long Tube Race Header design at any time in the future.

Click Here For Install Instructions for Porsche Homelink Connection For Valvetronic Exhaust Control

Processing Time: Orders are typically processed within 1–2 business days. Custom or special-order items may take longer—lead times will be noted in the product description if applicable.

Shipping Methods: We ship via USPS, UPS, and FedEx depending on item size, weight, and destination.

Order Tracking: Once your order ships, you’ll receive a confirmation email with tracking information.

Shipping Restrictions: We currently ship within the U.S. Oversized or freight items may require additional handling time and incur additional charges.

Signature Requirements: Some high-value orders may require a signature upon delivery for added security.

Need Help? If you have questions about shipping before placing your order, contact us or give us a call at (239) 992‑0437.

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Need Your New Parts Installed?

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27880 Industrial St
Bonita Springs, FL 34135

Mon - Fri, 7:30am - 6:00pm

(239) 992-0437

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Fabspeed Porsche 991 GT3 / GT3 RS Side Muffler Bypass Pipes (2014-2016)

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