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Give Your Suburban a Bolder Exhaust Tone
The CORSA 21126BLK brings the same Sport level engineering found on CORSA's Tahoe systems to the longer wheelbase 2021 to 2022 Chevrolet Suburban 5.3L. This 3.0 inch cat-back exhaust uses Reflective Sound Cancellation technology to deliver a deep, aggressive rumble under acceleration while staying drone free during highway cruising. Twin 4.0 inch Black PVD Pro-Series tips complete a single side exit look.
Key Features
- 3.0 inch mandrel bent 304 stainless steel cat-back system
- Reflective Sound Cancellation (RSC) technology for a drone free cabin
- Twin 4.0 inch Black PVD Pro-Series tips, dual wall slash cut
- Up to 20 percent increase in horsepower and torque below 5,000 RPM
- Computerized, mandrel bent, straight through muffler design
- Direct bolt on installation using factory hanger locations
- Limited lifetime warranty to the original purchaser
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2021-2022 | Chevrolet | Suburban | LS |
| 2021-2022 | Chevrolet | Suburban | LT |
| 2021-2022 | Chevrolet | Suburban | Premier |
| 2021-2022 | Chevrolet | Suburban | Z71 |
Specifications
| Detail | Value |
|---|---|
| Part Number | 21126BLK |
| Pipe Diameter | 3.0 inch |
| Tip Size | Twin 4.0 inch |
| Tip Finish | Black PVD Pro-Series |
| Material | 304 Stainless Steel |
| Sound Level | Sport |
| Exit Style | Single Side Exit |
| Horsepower Gain | Up to 20 percent below 5,000 RPM |
| Torque Gain | Up to 20 percent below 5,000 RPM |
| UPC | Not published by manufacturer |
What's Included
- 1x 21126BLK cat-back exhaust system with mufflers and pipes
- Twin 4.0 inch Black PVD Pro-Series tips
- All necessary clamps and hardware
- Installation instructions
About CORSA Performance
CORSA Performance builds every exhaust system around a simple goal, real power gains without giving up daily comfort. The 21126BLK carries that engineering to the Suburban, using 304 stainless steel construction and Reflective Sound Cancellation so drivers get an aggressive tone on demand and a quiet cabin the rest of the time.
Related Parts on Our Site
- Corsa 21-22 Chevrolet Tahoe 4DR 5.3L 4WD Single Side 3in Sport Cat-Back 4in DW Round Black PVD Tip
- Corsa 21-22 Suburban/GMC Yukon XL 6.2L 4WD Dual Rear 3/2.75in Sport Cat-Back DW 4in Pol Tips
- Corsa Single Universal 3.0in Inlet / 4.5in Outlet Black PVD Pro-Series Tip Kit
Frequently Asked Questions
What is the 21126BLK?The 21126BLK is a CORSA Sport level 3.0 inch cat-back exhaust system for the 2021-2022 Chevrolet Suburban 5.3L, featuring twin 4.0 inch Black PVD Pro-Series tips in a single side exit configuration.
Does the 21126BLK fit all Suburban trims?Yes, it fits LS, LT, Premier, and Z71 trims of the 2021-2022 Suburban 5.3L.
How loud is the 21126BLK compared to stock?It is tuned to a Sport sound level, giving a noticeably deeper and more aggressive tone than stock while remaining comfortable on the highway.
Will the 21126BLK increase horsepower?Yes, CORSA states up to a 20 percent increase in horsepower and torque below 5,000 RPM compared to the factory exhaust.
What finish do the tips come in?The 21126BLK comes with Black PVD Pro-Series tips for a deep black finish that resists heat discoloration.
Is professional installation required for the 21126BLK?No, it bolts on using factory hanger locations, though professional installation is recommended if you are not comfortable with exhaust work.
Does the 21126BLK come with a warranty?Yes, CORSA backs the 21126BLK with a limited lifetime warranty to the original purchaser.
Is the 21126BLK the same length as the Tahoe version?No, the 21126BLK is engineered specifically for the Suburban's longer 134.1 inch wheelbase and is not interchangeable with Tahoe specific systems.
Installation Instructions
- Raise and safely support the vehicle on a lift or jack stands.
- Remove the factory exhaust system starting at the muffler hangers and working forward.
- Disconnect factory hangers and lower the stock exhaust for removal.
- Test fit the CORSA 21126BLK system, starting at the front connection point.
- Secure all factory hanger points with the CORSA mufflers and pipes.
- Install the provided clamps at each connection joint without fully tightening.
- Align the twin 4.0 inch Black PVD tips evenly with the rear bumper opening.
- Tighten all clamps to specification once alignment is confirmed.
- Start the vehicle and inspect the full system for exhaust leaks.
WARNING: This product can expose you to chemicals including nickel compounds, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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