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)
Pipe Diameter | Tip Size | Tip Description | Tip # | Exit |
2.75" into muffler dual 2.25" out |
4.25" |
Dual Round Rolled Angle-Cut Intercooled |
19 |
Dual Center Rear Exit |
Suits: 2017-2019 Civic Si 1.5L Turbo Manual Trans. Front Wheel Drive 2 Door Coupe