Borla 140784 Cat-Back System For ’19-’23 Chev. Silv. 1500/Gmc Sierra 1500 (Exc. Zr2 & At4X) 6.2L At 2&4Wd Ext. Cab (6′ 7′) Bed/Crew Cab (5′ 9′) Bed. O.E. Split Rear Adapt. 60706 Crew Cab (6′ 7′) Bed.

System Features Borla’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 Mufflers. The Mufflers Then Enhance This Sound To The Character And Volume Appropriate For Our Touring, S-Type And Atak Systems. Boral Cat-Back & 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 Sound Of Power Respected By Motoring Enthusiasts Everywhere.