Borla ATAK 3.5" Polyphonic Harmonizer For 19-23 Chevy Silverado/GMC Sierra 1500

Replace the small Muffler behind the primary Muffler in the BORLA S-Type system with this 3.5" diameter Polyphonic Harmonizer 60680 to attain the ATAK sound level (louder than S-type").

BORLA 's Polyphonic Harmonizer Technology 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 mufflers. The mufflers then enhance this sound to the character and volume appropriate for our Touring, S-Type and ATAK systems.

Built from premium T-304 stainless steel, superior to T-400 series (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 stands behind every Polyphonic Harmonizer with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.