EXCEPT Vehicles with Porsche Sport Exhaust (PSE) (Borla(r) system does NOT contain active valves). This 2.25" diameter Borla(r) Cat-Back(tm) system is tailored to the 2.0L & 2.5L turbocharged engines available in the 718 Cayman/ 718 Cayman S and 718 Boxster/ 718 Boxster S and is tuned with performance and sound in mind. Our S-Type sound level will deliver the distinct Borla(r) Sound of Power not to mention a more exciting driving experience. As expected there is no compromise on comfort with our No-Drone guarantee. You can count on Borla(r) system to give your 718 Cayman or Boxster the sound you want. T-304 stainless steel construction provides additional durability over the stock exhaust. Ultra-smooth mandrel bends ensure maximum flow & power and precision computer numerical control (CNC) manufacturing ensures an accurate fit. The system is finished of with single 4"round polished T-304 stainless steel tips on each tail pipe. Best of all Borla(r) stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand., System Features:, Cat-Back(tm) Exhaust System, S-Type Sound Level, Dual 4" Round Polished T-304 Tips, T-304 Stainless Steel Construction, No-Drone, Each Borla(r) Exhaust System is built from premium T-304 series stainless steel to give you the absolute best in performance and durability. We strive to provide you with the best quality products and stand behind our systems with a Million-Mile Warranty.