Borla 14 18 Jeep Grand Cherokee 3.6L V6 AWD AT 4DR 2.50in S TYPE Cat Back Exhaust Black Chrome Tip Razor e100 Electric Scooter Review Mom Always Finds Out. Borla 14 18 Jeep Grand Cherokee 3. 6L V6 AWD AT 4DR 2. 50in S TYPE Cat Back Exhaust Black Chrome Tip This system features a black chrome on T 304 stainless steel tip. Using Borla Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. Borla Cat Back and Axle Back exhaust systems feature patented straight through and multi core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T 304 stainless steel, superior to T 400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra smooth mandrel bends ensure maximum flow & power, and precision computer controlled CNC manufacturing ensures an accurate fit. Best of all, Borla 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. S Type Cat Back Exhaust System For 2014 2021 Jeep Grand Cherokee 3. 6L V6 Automatic Transmission All Wheel Drive 4 Door. 2014 2021 Jeep Grand Cherokee 3. 6L V6 Automatic Transmission All Wheel Drive 4 Door.