Fabspeed Porsche 718 Boxster/Cayman Maxflo Cat-Back Exhaust System (2017+)

Finally, the 718 can breathe — and sound like a Porsche. Fabspeed’s Maxflo Cat-Back replaces the rear exhaust section with a free-flowing, straight-through 2.5″ (63mm) design that coaxes out a deeper boxer-engine rumble with a refined Porsche tone. No drone, more turbo sound, and noticeably livelier cracks and pops in Sport mode.

Power & weight

On Fabspeed’s DynoJet: +4 whp and +11 lb-ft peak on a stock car, +8 whp / +11 lb-ft at 3,500 RPM, and up to +19 whp / +20 lb-ft at 5,000 RPM. It also cuts a massive 18 lbs / 8.2 kg versus the factory rear muffler.

Features

• Fits all Porsche 718 Boxster / Cayman Base and S models (2017+) and GTS models (2017–2020) worldwide
• Choice of genuine carbon fiber tips or handmade single-wall stainless tips (brushed or polished)
• .065″ wall T304L stainless steel, designed and built in Fabspeed’s in-house CNC shop
• Direct bolt-on installation; 50-state emissions legal
• Fabspeed Lifetime Warranty

Want more? Pair it with Fabspeed’s XperTune performance software. Boosted Mayhem is an authorized Fabspeed dealer — see all Boxster / Cayman parts.

Ships brand new from the manufacturer's U.S. facility via UPS Ground, free in the U.S. In-stock items typically ship within 1 to 2 business days; built-to-order systems can take longer. Ask us for a lead-time estimate before you order.

Returns are accepted within 15 days of delivery on unused items in original packaging. A 15% restocking fee applies and return shipping is paid by the customer. Digital items such as ECU software are final sale once delivered.

Full shipping & returns policy