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Maxflo Cat-Back Exhaust System
Fabspeed's Maxflo Cat-Back Exhaust for the 718 Boxster and Cayman (Base/S 2017+, GTS 2017-2020) replaces the rear exhaust section with a freer-flowing 2.5-inch Bent over an internal mandrel so the tube keeps a constant diameter through the bend, unlike crush-bending. .065-inch T304L stainless design that saves 18 lbs (8.2kg). Expect a deeper, more refined flat-four rumble with no drone, more cracks and pops in Sport mode, and a slight increase in turbo sound. Fabspeed's dyno testing showed peak gains of 4whp and 11 ft-lbs of torque, growing to 19whp and 20 ft-lbs at 5000rpm. It's a direct bolt-on install with no cutting or welding, stays 50-state emissions legal, and comes with a choice of carbon fibre, brushed or polished stainless, satin black or titanium tips.
Frequently asked
Which cars does the Maxflo Cat-Back Exhaust System fit?
Fits your 718 Boxster. Fabspeed lists this piece for: all Porsche 718 Boxster/Cayman Base/S Models 2017+ and GTS Models 2017-2020 Worldwide; Porsche Boxster. 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 any drone?
No, Fabspeed says the system is very livable with no droning, even with the deeper tone.
How much power does it add?
Peak gains of 4whp and 11 ft-lbs of torque, rising to 19whp and 20 ft-lbs of torque at 5000rpm.
Does it stay emissions legal?
Yes, it's 50-state emissions legal since it doesn't touch the catalytic converters.
Is installation difficult?
No, it's a direct bolt-on install with no cutting or welding required.
Which option should I choose?
All five tip finishes, carbon fiber, brushed stainless, polished stainless, satin black or titanium, are the same size and shape and don't affect sound or power, so pick whichever best matches the rest of the car's trim.
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.
