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Porsche 911 GT3 RS

911 GT3 RS

991.2GT3 RS2018–2019
Fabspeed

Side Muffler Bypass Pipes

Choose Valve ConfigurationWant driver-controlled valves or fixed-open pipes?
Includes Helical aerospace exhaust valves so you can switch tone with the factory PSE/Sport button.Fixed open pipes with no valves, simpler and lighter, always in the louder mode.
Fabspeed Porsche 991.2 GT3 / GT3 RS Side Muffler Bypass Pipes (2017-2019)
Pricing
Priced on consult
inc GST & import · fitment confirmed before dispatch

Side muffler bypass pipes for the Porsche 991.2 GT3, GT3 RS and 911R (2017-2019), replacing the heavy, restrictive factory side mufflers for a Cup-car-like street sound. Built from 14-16ga A grade of stainless steel used for exhaust tubing, chosen for heat resistance and corrosion resistance. with Helical UK exhaust valves and O2 bungs, they bolt to the OEM catalytic converters, save around 19 kg from the rear of the car, and add roughly 9hp while retaining full Porsche Sport Exhaust: the factory valved exhaust with a driver-selectable loud and quiet mode. Sport Button functionality.

SKU FS.POR.9912GT3.SMBPorsche 911 GT3 RS (991.2) · 2018–201946 × 30 × 18 cm4.5 kg

Frequently asked

Does the Side Muffler Bypass Pipes fit my 911 GT3 RS?

This listing is specific to the Porsche 911 GT3 RS (991.2). Exact fitment for your year, trim and options is confirmed on your free consult before anything is ordered.

What does the price include?

The delivered price includes the part from Fabspeed USA, freight to Australia, import costs and GST. Enter your postcode to refine delivery; the final figure is confirmed on consult.

How long until it arrives?

Every Fabspeed part is made in-house at Fabspeed USA with about a one-week production lead time, then allow another 3-4 days for delivery to Australia via UPS. That freight is already included in the price.

Does this keep my Sport Button (PSE) function?

Yes. Fabspeed says the factory Sport Button PSE functionality is 100% retained with these side muffler bypass pipes.

What valves does it use and why does that matter?

Fabspeed uses Helical UK aerospace-grade exhaust valves, the same part Porsche Motorsports uses on GT3 side mufflers, rather than the cheaper valves it says some competitors use.

How loud is it going to be?

Fabspeed describes the sound as replicating an aggressive CUP car tone for the street, and specifically says it is not too loud.

Is this still cat-back and emissions legal?

Fabspeed describes it as CAT-BACK and emissions legal, bolting onto the OEM Porsche catalytic converters rather than replacing them.

Which option should I choose?

Valved keeps Helical aerospace exhaust valves so you can switch tone with the factory PSE/Sport button. Non-Valved drops the valves entirely for a lighter, simpler, always-open pipe.

Who installs it?

Rennen Motorsport in Adelaide, or an authorised dealer near you. Fitting it yourself may also be an option depending on the part, so raise it on your consult; professional installation is quoted separately.

Is it covered by warranty?

Fabspeed products carry the manufacturer's warranty, supported locally through Rennen Plus as the Australian principal. See our returns policy.

Can I just buy this outright, or do I need to talk to someone first?

Every enquiry, whether it's one part or a full build, starts with a free consult. We confirm the exact spec for your car before anything is quoted or ordered.

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