Video: Comparing Stock vs. Borla Exhaust Options for 2018+ Jeep Wrangler JL Borla 12 16 Jeep Wrangler 3.6AT MT 4WD 2+4DR S SQ RL AC SR 2.5in, 2in Best Exhaust Borla Jeep Wrangler JL 3.6L Axle Back Exhaust System S Borla 2018 Jeep Wrangler JL JLU 3.6L 2DR 4DR S Type SS Axle Back Black. Borla Cat Back And Axle Back multi core technology 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. This Part Fits: Year Make Model Submodel 2021 Jeep Wrangler Islander 2018 2022 Jeep Wrangler Rubicon 2018 2022 Jeep Wrangler Sport 2018 2022 Jeep Wrangler Sport S 2018 2022 Jeep Wrangler Unlimited Rubicon 2018 2022 Jeep Wrangler Unlimited Sahara 2018 2022 Jeep Wrangler Unlimited Sport 2018 2022 Jeep Wrangler Unlimited Sport S