-17%
Click to zoom in
Blacked Out Power for the 6.2L Denali
The CORSA 21129BLK matches the 21129's larger 3.5 inch cat-back architecture with Black PVD Pro-Series tips for a stealthy finish. Built for 2021 to 2022 Chevrolet Tahoe High Country and GMC Yukon Denali trucks powered by the 6.2L V8 with a factory dual rear exit exhaust, this system uses Reflective Sound Cancellation technology to stay drone free at cruise while delivering an aggressive tone under load.
Key Features
- 3.5 inch mandrel bent 304 stainless steel cat-back system
- Reflective Sound Cancellation (RSC) no drone technology
- Twin 4.0 inch Black PVD Pro-Series tips, dual wall slash cut
- Up to 20 percent increase in horsepower and torque under 5,000 RPM
- Sized specifically for the higher flow 6.2L V8
- Designed for factory dual rear exit exhaust configurations
- Limited lifetime warranty to the original purchaser
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2021-2022 | Chevrolet | Tahoe | High Country |
| 2021-2022 | GMC | Yukon | Denali |
Specifications
| Detail | Value |
|---|---|
| Part Number | 21129BLK |
| Pipe Diameter | 3.5 inch head pipe and muffler, 2.75 inch tail pipes |
| Tip Size | Twin 4.0 inch |
| Tip Finish | Black PVD Pro-Series |
| Material | 304 Stainless Steel |
| Sound Level | Sport |
| Exit Style | Dual Rear Exit |
| Horsepower Gain | Up to 20 percent under 5,000 RPM |
| Torque Gain | Up to 20 percent under 5,000 RPM |
| UPC | Not published by manufacturer |
What's Included
- 1x 21129BLK 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 sizes each cat-back system to match the engine it serves. The 21129BLK uses a larger 3.5 inch head pipe built specifically around the 6.2L V8's higher flow needs, wrapped in a blacked out Pro-Series finish and paired with Reflective Sound Cancellation for maximum output without harsh cabin drone.
Related Parts on Our Site
- Corsa 21-22 Chevrolet Tahoe/GMC Yukon 4DR 6.2L 4WD Dual Rear 3.5/2.75in Sport Cat-Back DW 4in Pol Tips
- Corsa 21-22 Suburban/GMC Yukon XL 6.2L 4WD Dual Rear 3.5/2.75in Sport Cat-Back DW 4in BLK Tips
- Corsa Single Universal 3.0in Inlet / 4.5in Outlet Black PVD Pro-Series Tip Kit
Frequently Asked Questions
What is the 21129BLK?The 21129BLK is a CORSA Sport level 3.5 inch cat-back exhaust for 2021-2022 Chevrolet Tahoe and GMC Yukon Denali 6.2L trucks with a factory dual rear exit exhaust, featuring twin 4.0 inch Black PVD Pro-Series tips.
Why is the pipe diameter larger than the 21127BLK?The 21129BLK is built for the higher flowing 6.2L V8, which benefits from the larger 3.5 inch head pipe compared to the 3.0 inch pipe used on 5.3L applications.
Does the 21129BLK fit the standard 5.3L Tahoe?No, the 21129BLK is engineered specifically for 6.2L equipped Tahoe High Country and Yukon Denali models; use the 21127BLK for 5.3L trucks.
How much horsepower does the 21129BLK add?CORSA rates the 21129BLK for up to a 20 percent increase in horsepower and torque under 5,000 RPM versus the stock exhaust.
What finish are the exhaust tips?The 21129BLK comes with Twin 4.0 inch Black PVD Pro-Series tips for a deep black finish that resists heat discoloration.
Does the 21129BLK require a factory dual rear exit exhaust?Yes, it is designed to match a factory dual rear exit configuration.
Is the 21129BLK covered by a warranty?Yes, it carries a limited lifetime warranty to the original purchaser.
Can I get the 21129BLK with polished tips instead?Yes, the 21129 is the same system with Polished Pro-Series tips instead of black.
Installation Instructions
- Raise and safely support the vehicle on a lift or jack stands.
- Remove the factory dual rear exit exhaust starting at the rearmost hangers.
- Disconnect factory hangers and lower the stock exhaust for removal.
- Test fit the CORSA 21129BLK 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 openings.
- 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.
Catback
A catback exhaust system replaces everything from the catalytic converter back, covering the mid pipe, muffler, and tailpipe section in one bolt on upgrade. This collection covers catback systems for trucks, Jeeps, muscle cars, imports, and performance SUVs, giving you a straightforward way to improve sound, exhaust flow, and rear end styling without touching the factory catalytic converters or front pipe. Catback systems are available in stainless steel and titanium construction, with dual rear exit, single exit, and quad tip configurations, and a range of sound levels from mild touring tone to aggressive track character. Whether you want a deeper daily driver sound or a full track ready exhaust note, you will find a matched system for your platform here. What This Category Covers This collection includes complete catback exhaust systems, cat-back kits, dual rear exit systems, axle back adjacent catback upgrades, stainless steel and titanium exhaust systems, and street, tourin...
View Catback Products
CORSA Performance
CORSA Performance exhaust systems and cold air intakes for American muscle cars and trucks are stocked at Black Ops Auto Works. Shop CORSA Xtreme, Sport, and Touring cat-back exhausts, axle-back exhausts, active-valve systems, carbon fiber cold air intakes, mufflers, resonators, X-pipes, H-pipes, exhaust tips, and oil catch cans for Camaro, Corvette, Mustang, Silverado, F-150, Charger, Challenger, Durango, and Grand Cherokee Trackhawk. Every CORSA part is filterable by year, make, model, trim, engine, and drivetrain so the correct exhaust configuration ships the first time. Black Ops Auto Works carries 504 CORSA Performance SKUs across exhaust, intake, and accessory categories. What This Brand Covers CORSA Performance builds vehicle-specific exhaust systems and cold air intakes engineered for aggressive sound, controlled cabin noise, premium stainless construction, and precise fitment. The brand is best known for cat-back and axle-back systems on Camaro, Corvette, Mustang, and M...
View CORSA Performance Products
Exhaust Systems
Performance exhaust systems for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop cat-back systems, axle-back systems, turbo-back systems, headers, downpipes, mid-pipes, mufflers, resonators, catalytic converters, exhaust tips, exhaust valve controllers, oxygen sensors, exhaust brakes, and motorcycle and powersports exhausts for Mustang, Camaro, Challenger, Corvette, Silverado, and Super Duty platforms. Every product is filterable by exhaust position, material, pipe diameter, and vehicle year, make, model, and trim so the correct fitment ships the first time. Black Ops Auto Works carries 7,441 exhaust SKUs across every position of the exhaust system. What This Category Covers Exhaust upgrades change sound, appearance, and in some cases power. Exhaust fitment depends on engine, drivetrain, and factory exit position, so confirm the exact platform before ordering any exhaust component. Exhaust Position Cat-back, axle-back, turbo-back, and header-back systems e...
View Exhaust Systems Products