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SOUL Side Muffler Bypass Porsche 991 GT3 / GT3 RS (2014-2019)

SKU: POR.991GT3.SMBV
Price
$2,095.00
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

 

 

Upgrade your Porsche 991 GT3 / GT3 RS / 911 R (2014–2019) with this premium valved side muffler bypass system from SOUL Performance Products. Designed for maximum performance and sound refinement, the kit sheds approximately 35 pounds of weight, improves under-hood heat management, and delivers a more aggressive exhaust note—while retaining full valve functionality for daily driving comfort.

Fitment Notes

  • Fits all Porsche 991.1 / 991.2 GT3, GT3 RS and 911 R models (2014–2019).

  • Retains factory exhaust valves for selectable sound profiles.

  • Direct bolt-on installation; no cutting or fabrication required. 

  • Designed for performance driving—reduces rear-tire heat and improves flow when valves are open.

Included

  • Pair of valved bypass pipes (left & right) replacing side muffler section.

  • Mandrel-bent T304L stainless steel tubing and high quality flex bellows.

  • All required mounting hardware and gaskets for installation.

  • Detailed installation instructions and SOUL Lifetime Warranty documentation.

Product Specs

  • Construction: T304L stainless steel, 3″ (76 mm) diameter primary piping with 0.065″ wall thickness.

  • Weight savings: Approximately 35.4 lbs (16 kg) lighter than factory side muffler assembly (44.9 lbs → 9.5 lbs) 

  • Sound profile: Quiet/comfortable with valves closed; aggressive exotic tone when valves open.

Product Features

  • Massive Weight Reduction: 35 lb+ weight drop improves rear axle unload, handling and agility.

  • Improved Heat Management: Bypassing the mufflers lowers heat build-up under the rear bumper and around rear tires.

  • Selectable Sound: Factory valves retained—comfortable tone for street driving, full performance sound when opened.

  • High-Flow 3″ Piping & Flex Bellows: Enhanced flow and durability under aggressive driving.

  • Premium Build Quality: Crafted in-house in SOUL’s facility (Willow Grove, PA) with T304L stainless and precision manufacturing.

  • Lifetime Warranty: Purchase with confidence knowing it’s covered for street and track.