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Side Muffler Bypass Pipes
Side muffler bypass pipes for the Porsche 997.2 GT3 and GT3 RS (2010-2011), replacing the heavy, restrictive factory side mufflers for a Cup-car-like street sound with no resonance or An unwanted droning resonance at certain highway rpm, where exhaust pulses match the cabin's natural frequency.. Built from 14-16ga A grade of stainless steel used for exhaust tubing, chosen for heat resistance and corrosion resistance., they add around 9hp and save 20 kg from the rear of the car. Available with or without Helical UK aerospace exhaust valves, which control gas flow and back-pressure with a pneumatic actuator and high-temperature bearings.
Frequently asked
Does the Side Muffler Bypass Pipes fit my 911 GT3 / GT3 RS?
This listing is specific to the Porsche 911 GT3 / GT3 RS (997.2). 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.
Will this cause exhaust drone?
No, Fabspeed says it replicates an aggressive Cup-car sound for the street with no resonance and no drone.
Is it street legal?
Fabspeed states it is 100 percent emissions compliant and CARB compliant, and therefore street legal.
What's the difference between the valved and non-valved option?
The valved option adds Fabspeed's Helical Aerospace ISO-certified exhaust valves, which open and close to control gas flow and optimize engine back-pressure; the non-valved option leaves those out.
Does it save weight?
Yes, Fabspeed says it cuts significant weight from the rear of the car by replacing the heavy factory side mufflers.
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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