Twin Tip Presence for the Silverado ZR2 and Sierra AT4X
The CORSA 21238 is a stainless steel cat back exhaust system for the Chevrolet Silverado 1500 ZR2 and GMC Sierra 1500 AT4X, featuring polished twin tips for an aggressive dual rear exit look. The 21238 is engineered and tested by CORSA Performance in Berea, Ohio.
Key Features
- 21238 stainless steel cat-back exhaust
- Polished dual wall Pro Series twin tips
- Dual rear exit configuration
- Bolt on installation using factory hangers
- Improves exhaust tone and flow versus stock
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2022-2024 | Chevrolet | Silverado 1500 | ZR2 |
| 2022-2023 | GMC | Sierra 1500 | AT4 |
| 2022-2024 | GMC | Sierra 1500 | AT4X |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 21238 |
| Brand | CORSA Performance |
| Pipe Diameter | 3.0 in |
| Exhaust Tip | Twin 4.0in Polished Pro-Series (Dual Wall Slash Cut) |
| Sound Level | Sport |
| Material | 304 Stainless Steel |
| Flow Increase | Improved vs stock |
| Weight Change | Reduced vs stock |
| Horsepower Gain | Gains vary by tune |
| Torque Gain | Gains vary by tune |
| UPC | 847466027529 |
What's Included
- Cat-back exhaust system with mufflers
- Twin 4.0in polished Pro-Series exhaust tips
- Stainless steel clamps and hardware
- Installation instructions
About CORSA Performance
CORSA Performance is a Berea, Ohio based manufacturer specializing in patented No Drone RSC (Reflective Sound Cancellation) exhaust technology, engineered to deliver an aggressive exhaust tone without cabin drone. Every CORSA system is built from 304 stainless steel and tested on a proprietary sound dynamometer to balance performance, sound, and durability.
Related Parts on Our Site
- Chevrolet Silverado 1500 Turn Down Exhaust (COR21239)
FAQ
What is the 21238?The 21238 is a CORSA Performance cat-back exhaust manufactured from 304 stainless steel for the Chevrolet Silverado 1500 ZR2.
What sound level does the 21238 produce?The 21238 is tuned to a sport sound level, balancing an aggressive tone with daily drivability.
Will this exhaust fit my vehicle without modification?Installation uses existing factory hangers and mounting points for a bolt on fit on the vehicles listed in the fitment section. Always confirm your exact trim and drivetrain before ordering.
Does this system include CORSA No Drone RSC technology?Yes, CORSA No Drone Reflective Sound Cancellation technology is engineered into this system to eliminate unwanted cabin drone.
What material is the exhaust constructed from?This product is constructed from 304 stainless steel for long term corrosion resistance and durability.
What tools are needed for installation?Basic hand tools including a socket set, wrenches, and a jack with stands are typically sufficient for installation.
Is a tune required after installation?A tune is not required for proper operation, though a professional tune can help maximize any available horsepower and torque gains.
Does this product carry a warranty?CORSA Performance exhaust systems are backed by a limited lifetime warranty against manufacturing defects.
How long does installation typically take?Most installations can be completed in under two hours using basic hand tools and a vehicle lift or jack stands.
Where can I find the UPC for this product?The UPC for this part is listed in the specifications table above as 847466027529.
Installation Instructions
- Raise and safely support the vehicle on a lift or jack stands
- Remove the factory or existing exhaust system starting at the front connection
- Disconnect exhaust hangers and lower the old system for removal
- Position the new CORSA system and loosely connect all sections
- Align the exhaust tips evenly with the bumper opening for proper clearance
- Tighten all clamps and hangers to the manufacturer specified torque
- Start the engine and inspect the complete system for leaks and clearance
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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