The Borla(r) Cat-Back(tm) system for the Civic Type R is unique in the industry with an adjustable sound level. By Changing the block off plates behind the center tip you can adjust the SPL (Sound Pressure Level) to your taste. System also features Borla(r)'s Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound to the Borla(r) mufflers. The mufflers then enhance this sound to the character and volume appropriate for our Touring, S-Type and ATAK(r) systems. System features polished T-304 stainless steel tips. Borla(r) Cat-Back(tm) & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla(r) Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 austenitic 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 numerical control (CNC) manufacturing ensures an accurate fit. 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.. ATAK(r) Cat-Back(tm) Exhaust System 2017-2021 Honda Civic Type R 2.0L 4 Cyl.. Manual Transmission Front Wheel Drive 4 Door Hatchback.. By changing the block off plates behind the center tip you can adjust the SPL (Sound Pressure Level). 2017-2021 Honda Civic Type R 2.0L 4 Cyl.. Manual Transmission Front Wheel Drive 4 Door Hatchback.. Borla 2017-2018 Honda Civic Type-R Cat-Back Exhaust. System features Polyphonic Harmonizer technology. Cat-Back(tm) Exhaust System - ATAK(r). BORLA Cat-Back System. Exhaust System Kit. Cat-Back System. bor140738

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