SKU: 1175387700

Fabspeed 991.2 GT3/GT3 RS Side Muffler Bypass Pipes (17+) (FS.POR.9912GT3.SMBV)

Sale price$1033.17 Regular price$1147.97
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Fabspeed 991.2 GT3/GT3 RS Side Muffler Bypass Pipes (17+) (FS.POR.9912GT3.SMBV)Optimized design that replaces the heavy and restrictive factory GT3 side mufflers for improved exhaust flow, increased dynamic sports car sound and huge significant weight savings. Utilizing super premium Helical U. K. Aerospace grade valves along with the addition of O2 bungs, Fabspeed's Side Muffler Bypass Pipesprovide the ultimate street and track solution for the 991. 2 GT3 GT3 RS. Prefect upgrade for any Street Driven GT3 touring, GT3RS, Gt3 PDK

Optimized design that replaces the heavy and restrictive factory GT3 side mufflers for improved exhaust flow, increased dynamic sports car sound and huge significant weight savings.

Utilizing super premium Helical U.K. Aerospace grade valves along with the addition of O2 bungs, Fabspeed's Side Muffler Bypass Pipesprovide the ultimate street and track solution for the 991.2 GT3 / GT3 RS. Prefect upgrade for any Street Driven GT3 touring, GT3RS, Gt3 PDK cars. Factory Sport Button PSE is 100% retained with Fabspeed GT3 side muffler bypass pipes with exhaust valves.

FEATURES:

  • Fits all Porsche 991.2 GT3 / GT3 RSvehicles worldwide
  • Highest quality OEM Porsche Ag. Helical Limited United Kingdom exhaust valves are used for bullet-proof reliability.
  • Includes O2 bungs and plugs at no extra charge.
  • Saves 41 lbs 18.6 kg from the rear of the vehicle
  • CAT-BACK Emissions legal. Bolts onto OEM Porsche catalytic converters
  • Replicates aggressive CUP car sound for the street.
  • 14-16ga T304 Stainless Steel construction
  • Retains Sport Button PSE functionality.
  • Simple bolt-on installation- remove rear left and Right side mufflers and install these Works of Art..
  • All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

HELICAL VALVES:

We chose to use Helical Valves on our 991.2 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 Ultra high temperature high-temperature bearings at both ends of the butterfly spindle. Helical is an Aerospace Company that also makes exhaust components. Fabspeed Motorsport USA is the USAs exclusive importer buyer.

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 Race 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. Extra oxygen sensor ports also allow Data Acquisition at any time. Another value added feature only from Fabspeed.

ClickHere For Install Instructions forPorsche Homelink Connection For Valvetronic Exhaust Control

Note: only Fabspeed Motorsport USA uses Helical Limited England exhaust valves on all systems. Porsche uses Helical exhaust valves on their GT3 mufflers because the valves are bullet-proof silica carbide. FYI- Ferrari, Lamborghini, McLaren, Aston Martin all demand and use Helical Exhaust Valves UK. for their sports cars and hypercars because only Helical doesn't melt, crack, break, flutter or rattle.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 1175387700

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4.8 ★★★★★
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Verified Purchase
Diana Walls
Draper, US
★★★★★ 5
WHERE HAVE YOU BEEN 😊
Color: Grey, Size: 34" - 3 Panel
I purchased RANTILA 3 Panel Room Divider, 6 Ft Tall Folding Privacy Screen Freestanding Room Partition Wall Dividers, 102''W x 20''D x 71''H, Grey. For outdoor use on my patio is perfect . PRIVACY!!! YAY! It was packaged very carefully. There were no missing parts. Instructions were there but I still had to use the video visually. A few screws would not screw in. So I used a hammer with a few good taps that helped using the screw driver. 😊 It was easy putting it together following the directions. Everything is well made. Love the height, functionality and it’s definitely light it works. Thank you
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2025
E
Verified Purchase
Ellen W.
West Palm Beach, US
★★★★★ 5
I am happy with the room divider. It does what I intended.
Color: Beige, Size: 34" - 3 Panel
Use a power screwdriver.
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Reviewed in the United States on April 25, 2026
M
Verified Purchase
Michele Parkinson
New York, US
★★★★★ 3
It’s really pretty decent except for one thing.
Color: Grey, Size: 34" - 4 Panel, Color: Grey, Size: 34" - 4 Panel
I bought two of these for my basement and they do look great. They were easy to assemble and I’m happy with them. The problem is that the stitching on the fabric panels are almost the size of a machine basting stitch (which for non sewers means large temporary stitches). Because the panels are tight by design, the stitches had already started to come undone before I could finish assembling everything. Fortunately I can sew and I reinforced all the panels. I had to take the first ones back off the poles to do them but I did the second set before assembling. It’s really not a bad product for the money. It’s quality fabric and the design itself looks great. The stitching looks fine but it’s just not substantial enough for the purpose it is supposed to serve. I can’t imagine why it be sewn so insufficiently. I was able to resolve my issue because I can sew. I wasn’t planning on sewing nor did I really have the time. I could have made it myself but I didn’t want to and that is why I purchased this. I ended up using valuable time. The really unfortunate thing is, I have no other complaints. This is a manufacturing problem.
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Reviewed in the United States on February 3, 2023
M
Verified Purchase
Mad Jack
Lake Worth, US
★★★★★ 5
Inexpensive walls.
Color: Grey, Size: 34" - 3 Panel, Color: Grey, Size: 34" - 3 Panel
We had a hot request for a workstation in the warehouse with some privacy. These have worked great. Easy to assemble. They are lightweight and stable. This was an inexpensive solution that looks professional. Our client loved it.
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Reviewed in the United States on August 1, 2025
A
Verified Purchase
Amber
New York, US
★★★★★ 1
Dont wait! Assemble right away! Just in case you need to return it.
Color: Black, Size: 22" - 4 Panel
Ok, I like the idea of this but the assembly is frustrating. One side lined up perfectly with the holes however, the small bars that connect the screen to base is not lining up. I think it's do the fabric the screen or divider is made of. It's not stretchy. I brought this months ago and just opened it today. I'm upset and don't even think returning it is possible. If the material was a bit longer or stretchy to give a little room to work with this divider would be great. However, I'm not sure what I can use it for since I'm unable to attach it to the bottom. Beware! Don't wait like me. Tip for the manufacturer. Next time invest in Velcro dividers so the fabric can be adjusted with ease. Literally if I take the screen off the frame aligns perfectly. However, it defeats its purpose of privacy. I might buy some material myself and create a more flexible divider. Or I'll buy Velcro myself and attach to the bottom. I don't know yet.
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Reviewed in the United States on December 15, 2025

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