Borla 2019 Chevrolet Silverado/Sierra 1500 6.2L Atak 3.5in Diameter Polyphonic Harmonizer

Replace the small muffler behind the primary muffler in the BORLA? “S-Type” system with 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.
MUFFLER for SILV./ SIERRA 1500 2019 6.2L V8 AT 2+4WD 4DR OPTIONAL POLYPHONIC HARMONIZER
SILV./ SIERRA 1500 2019 6.2L V8 AT 2+4WD 4DR OPTIONAL POLYPHONIC HARMONIZER

Fits
Chevrolet Silverado 1500 High Country 2019 to 2021
Chevrolet Silverado 1500 LTZ 2019 to 2021
GMC Sierra 1500 Denali 2019 to 2021
GMC Sierra 1500 SLT 2019 to 2021