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Sport / 3.0 in Cat-Back DRE Turndown | 2022-2024 Silverado ZR2, Sierra AT4X 6.2L 147.5WB (21239)

SKU: 21239

2 reviews

SKU: 21239

Sound Level

Technical specifications

Performance results aren’t guaranteed & may vary.
+47% Flow increase
-10 weight savings (lbs.)

CORSA's Patented RSC® Technology is designed for an AGGRESSIVE SOUND under acceleration and DRONE-FREE EXPERIENCE during cruise. Every exhaust system is engineered specific to each vehicle application in order to maximize performance and eliminate drone at cruise


2022-2024 Chevrolet Silverado ZR2 1500 6.2L V8
Crew Cab/Short Bed 147.5" Wheelbase
*Fitment Not Confirmed on AEV Bison Configurations

2022-2024 GMC Sierra AT4X 1500 6.2L V8
Crew Cab/Short Bed 147.5" Wheelbase
*Fitment Not Confirmed on AEV Bison Configurations


The CORSA Performance Silverado ZR2 and Sierra AT4X catback exhaust offering was designed for one reason: To give GM's full-size off-roader the voice it deserves. A noticeably loud, deep and aggressive exhaust note balanced with a completely drone-free driving experience courtesy of CORSA's best-in-class RSC® (Reflective Sound Cancellation) No Drone Technology. The CORSA Performance custom tuned exhaust system unleashes an additional 25 decibels of sound and offers a straight-through design that eliminates restrictions allowing the system to easily outflow the stock exhaust by up to 47% freeing up horsepower and torque. CORSA Performance catback exhaust systems are meticulously constructed from 304 Stainless Steel, and engineered to endure a lifetime of use and abuse. CORSA Performance exhaust systems are manufactured in Berea, Ohio USA and backed by a Lifetime Warranty

3.0" Cat-Back, Dual Rear Exit with turn downs
Sport Sound Level
*3.0" to 2.5" 

  • 25 dB louder than stock
  • Engineered for maximum ground clearance during off-road adventures


🗒️ Installation Instructions

CORSA branded exhaust systems are backed by a Limited Lifetime warranty for as long as you own your vehicle with proof of purchase. (VIEW WARRANTY)

Every vehicle-specific CORSA product is engineered and designed to match the unique properties of the vehicle it is designed for to deliver perfect fitment and performance. CORSA does not recommend or recognize purchases and installations on unspecified vehicles.