For sale: 2013-2016 Porsche Cayman Cat-Back Exhaust System S-Type Part # 140534
Link to manf product (and installation instructions are also available)

I bought in the system Feb of 2022 and installed it on my 2015 base model Cayman for weight reduction and the performance increase. The system has an A+ for fit and finish, and installation was easy utilizing the factory exhaust cradle and Borla's stainless clamps. This car never saw any winter, and barely ever saw any rain, so the cat back is in excellent shape, and with Borla's million-mile warranty, so this should last you for many decades to come!

Located in Columbus Ohio, and willing to travel (within reason) to a buyer to save on shipping. Willing to ship at the buyer's expense, (probably about $100, but we can work that out!)

Here's a link to a video of the exhaust in action when the vehicle was on the rollers: