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Xtreme Valved Cat-Back with Black Tips Built for the 2020-2025 Cadillac CT5-V 3.0L Turbo
The Corsa 21326BLK is a 3.0-inch Xtreme valved cat-back exhaust system engineered for the 2020-2025 Cadillac CT5-V (non-Blackwing) 3.0L Twin-Turbo V6. Corsa's 3.0-inch double X-pipe replaces the factory crushed piping near the rear axles to directly increase flow and exhaust velocity, while RSC (Reflective Sound Cancellation) technology eliminates the drone frequencies that turbocharged engines commonly generate at highway speeds. The system integrates fully with the factory active exhaust valve assembly, preserving all OEM driving mode control over exhaust character. Four 4.5-inch black twin tips complete the blacked-out look of a properly spec'd CT5-V. Installation requires removal of the OEM bezel tip and trimming of the rear under-paneling. Active exhaust valves must be in the open (Track mode) position before removing the stock exhaust. Corsa backs this system with a Lifetime Warranty on exhaust components and a 5-year warranty on active valve parts.
Key Features
- Corsa 21326BLK 3.0-inch Xtreme cat-back for 2020-2025 Cadillac CT5-V 3.0L Turbo (non-Blackwing)
- Corsa RSC technology eliminates drone while delivering the Xtreme sound profile under power
- 3.0-inch double X-pipe replaces factory crushed piping for increased flow and exhaust velocity
- Fully compatible with factory active exhaust valve assembly and all OEM driving modes
- Four 4.5-inch black twin tips for an aggressive, blacked-out appearance
- Engineered and manufactured in the USA
- Direct bolt-on fitment with included hardware
- Lifetime Warranty on exhaust components; 5-year warranty on active valve components
- Requires removal of OEM bezel tip and trimming of rear under-paneling during installation
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2020-2025 | Cadillac | CT5-V | 3.0L Turbo V6 (Non-Blackwing) |
Specifications
| Detail | Value |
|---|---|
| MPN | 21326BLK |
| Brand | CORSA Performance |
| System Type | Xtreme Valved Cat-Back |
| Engine | 3.0L Twin-Turbo V6 |
| Pipe Diameter | 3.0-inch double X-pipe |
| Tip Style | 4.5-inch Black Twin Tips |
| Tip Qty | 4 total (twin per side) |
| Valve Compatibility | OEM Active Exhaust Valve Compatible |
| Sound Level | Xtreme (aggressive, RSC drone-free) |
| Country of Manufacture | USA |
| Warranty | Lifetime (exhaust) / 5-Year (valves) |
| Compatible Vehicles | 2020-2025 Cadillac CT5-V (Non-Blackwing) |
| UPC | 743047212257 |
What's Included
- Corsa 21326BLK cat-back exhaust system (all pipe sections)
- 4 x 4.5-inch black twin tips
- Active exhaust valve interface hardware
- All clamps, hardware, and gaskets required for installation
- Installation instructions
Frequently Asked Questions
What is the exact fitment for the Corsa 21326BLK?The Corsa 21326BLK fits 2020-2025 Cadillac CT5-V models equipped with the 3.0L Twin-Turbo V6 engine. It does NOT fit the CT5-V Blackwing, which uses a different exhaust architecture. Verify your trim level before ordering.
Does the Corsa 21326BLK work with the factory active exhaust system?Yes. The Corsa 21326BLK is fully compatible with the factory Cadillac active exhaust valve assembly. All OEM driving modes (Tour, Sport, Track) continue to control valve position and exhaust character exactly as they did with the stock system. No valve simulator module is required.
What is Corsa RSC technology?RSC stands for Reflective Sound Cancellation. Corsa engineers use this proprietary tuning method to identify and cancel the specific sound frequencies that cause interior drone, without restricting flow or reducing exhaust note at higher RPM. The result is an exhaust that sounds aggressive under power but remains comfortable at highway cruise.
Does the Corsa 21326BLK require any cutting or modification?Yes. Installation requires removal of the factory OEM bezel tip and trimming of the rear under-paneling to clear the Corsa system. Additionally, the active exhaust valves must be placed in the fully open (Track mode) position before beginning removal of the stock exhaust. This is a standard requirement noted in Corsa's installation instructions.
What is the difference between the 21326BLK and the 21326CF?The Corsa 21326BLK and 21326CF are the same Xtreme valved cat-back system with different tip finishes. The 21326BLK uses 4.5-inch black tips for a blacked-out, aggressive look. The 21326CF uses 4.5-inch carbon fiber tips for a premium, motorsport-inspired appearance. Performance, sound, fitment, and warranty are identical between the two.
What is Corsa's warranty on the 21326BLK?Corsa provides a Lifetime Warranty on the exhaust tubing and muffler components. The active exhaust valve interface components carry a separate 5-year warranty. Warranty coverage requires proper installation per the included instructions and is void if the system is used in racing or competition applications.
Will the Corsa 21326BLK void my CT5-V warranty?Under the Magnuson-Moss Warranty Act, a dealer cannot void your vehicle warranty solely because you installed an aftermarket exhaust system. The dealer must prove that the aftermarket part caused the specific failure being claimed. Corsa's system is a bolt-on replacement that does not alter engine management or emissions control systems upstream of the catalytic converters.
Does the Corsa 21326BLK fit the 2025 CT5-V?Yes. Corsa lists the 21326BLK as compatible with 2020-2025 Cadillac CT5-V 3.0L Turbo (non-Blackwing). Always verify fitment on Corsa's website for the most current model year coverage before ordering.
Does the Corsa 21326BLK pass California emissions?The Corsa 21326BLK is a cat-back system and does not alter the catalytic converters or oxygen sensors. California regulations on aftermarket exhaust systems vary. Check with Corsa and your local regulations before purchasing if you are in California.
Installation Instructions
- Set the CT5-V to Track mode to fully open the active exhaust valves before beginning removal of the factory exhaust.
- Allow the vehicle exhaust to cool completely. Work in a well-ventilated area with the vehicle safely raised on jack stands.
- Apply penetrating oil to all factory exhaust clamp bolts and flange hardware. Allow to soak for 15 minutes.
- Remove the factory OEM bezel tip from the rear bumper.
- Trim the rear under-paneling as directed in the Corsa installation instructions to provide clearance for the new system.
- Remove the factory cat-back exhaust system from the rear, working forward. Retain factory hangers in good condition.
- Begin installing the Corsa 21326BLK from the front connection point, loosely securing all clamps and hangers before final tightening.
- Route all pipe sections per the Corsa instructions, confirming clearance from the undercarriage, fuel lines, and heat shields.
- Install the 4 black tips and center them in the bumper cutouts before tightening.
- Tighten all clamps to specification from front to rear. Start the engine and inspect all connection points for exhaust leaks.
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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