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Full Authority Over Every Note: Corsa Active Valve Cat-Back for the 2022-2025 CT4-V Blackwing
The Corsa 21317BLK gives the 2022-2025 Cadillac CT4-V Blackwing a full cat-back exhaust overhaul built around the factory active valve system. The 3.0-inch dual cat-back routes through Corsa's double X-pipe before exiting through twin 4.5-inch Black Pro-Series slash-cut tips. Choose Sport mode for a refined cruise tone or let the active valve open in Track and the 3.6L Twin Turbo V6 delivers the Xtreme-level sound the Blackwing was always capable of. Engineered and manufactured in the USA and backed by Corsa's Lifetime Warranty.
Key Features
- Active valve integration: works seamlessly with the factory Cadillac Active Exhaust valve assembly for full mode-dependent sound control
- Corsa No Drone RSC Technology: resonance suppression tuned specifically for the CT4-V Blackwing 3.6L TT V6 eliminates in-cabin drone at highway speeds
- 3.0-inch double X-pipe: replaces the stock crushed piping near the rear axles for improved flow and measurable power gains
- Twin 4.5-inch Black Pro-Series tips: dual wall slash-cut black coated tips add an aggressive, blacked-out appearance at the rear
- Xtreme to Sport active sound range: from refined street driving to full Xtreme track mode in one button press
- T-304 stainless steel construction: corrosion-resistant, built to last the life of the vehicle
- Made in USA: engineered and manufactured in Cortland, Ohio
- Lifetime warranty: Corsa backs every cat-back system with a lifetime limited warranty
- Requires factory Active Exhaust Module: must use the OEM active exhaust module for proper installation and valve operation
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2022-2025 | Cadillac | CT4-V | Blackwing |
Specifications
| Detail | Value |
|---|---|
| Part Number (MPN) | 21317BLK |
| Brand | Corsa Performance |
| System Type | Cat-Back |
| Pipe Diameter | 3.0 inches |
| Exit Style | Dual Rear Exit |
| Tip Size | 4.5 inches |
| Tip Style | Pro-Series Dual Wall Slash Cut |
| Tip Finish | Black Coated |
| Sound Technology | No Drone RSC |
| Sound Level | Xtreme (active valve: Xtreme to Sport) |
| Material | T-304 Stainless Steel |
| Country of Manufacture | USA |
| Warranty | Lifetime Limited |
| Engine | 3.6L Twin Turbo V6 (LF4) |
| UPC | N/A |
What's Included
- Corsa 21317BLK cat-back exhaust system with twin 4.5-inch Black Pro-Series tips
- All necessary hardware and clamps for installation
- Installation instructions
About Corsa Performance
Corsa Performance has been designing and manufacturing performance exhaust systems in Cortland, Ohio since 1992. Every Corsa system is engineered using proprietary RSC (Resonance Sound Cancellation) technology that eliminates drone while maximizing exhaust tone. The 21317BLK is part of Corsa's Cadillac performance lineup, engineered specifically for the twin-turbocharged V6 powertrain in the CT4-V Blackwing with full compatibility with the factory active valve system.
Frequently Asked Questions
Does the Corsa 21317BLK work with the factory active exhaust valve on the CT4-V Blackwing?Yes. The Corsa 21317BLK is designed to integrate seamlessly with the factory Cadillac Active Exhaust valve assembly. You must retain the OEM active exhaust module for the valve to function correctly. The system gives the driver full mode-dependent sound control from Sport to Xtreme.
What is the difference between the Corsa 21317BLK cat-back and the 21319BLK axle-back?The 21317BLK is a full cat-back system that replaces all exhaust piping from the catalytic converters rearward, including Corsa's 3.0-inch double X-pipe which improves flow by eliminating the stock crushed piping near the rear axles. The 21319BLK is an axle-back that only replaces the mufflers and tips. The cat-back delivers greater performance and sound improvement.
Will the Corsa 21317BLK drone at highway speeds?No. Corsa's proprietary No Drone RSC Technology is tuned specifically for the CT4-V Blackwing 3.6L Twin Turbo V6. The system eliminates in-cabin drone at cruise speeds while still delivering an aggressive exhaust note when the driver commands it through the active valve.
Does the Corsa 21317BLK fit the 2024 and 2025 CT4-V Blackwing?Yes. The Corsa 21317BLK fits the 2022, 2023, 2024, and 2025 Cadillac CT4-V Blackwing equipped with the factory active valve exhaust system. It is engineered specifically for the 3.6L LF4 Twin Turbo V6 in this generation.
How much power does the Corsa cat-back add to the CT4-V Blackwing?Corsa's double X-pipe design increases exhaust flow by approximately 10 percent over the stock crushed piping. Exact power gains vary by tune and supporting modifications, but the improved flow delivers measurable increases in high-RPM output for the 3.6L TT V6.
Are the black tips on the 21317BLK painted or coated?The 4.5-inch tips on the Corsa 21317BLK are Black Pro-Series dual wall slash-cut tips with a black coating. They are the same Pro-Series tip construction used across Corsa's lineup with a black coated finish rather than polished stainless. Surface care with a dedicated exhaust tip cleaner is recommended to maintain the black finish over time.
Is the Corsa 21317BLK a bolt-on installation or does it require welding?The Corsa 21317BLK is a bolt-on cat-back system with no welding required. Professional installation is recommended to ensure proper fit, alignment, and use of the factory active exhaust module during reassembly.
What warranty does Corsa provide on the 21317BLK?Corsa backs the 21317BLK with a lifetime limited warranty covering defects in materials and workmanship. This is one of the strongest warranties in the performance exhaust industry and reflects Corsa's confidence in its domestic manufacturing quality.
Installation Notes
- Allow the vehicle to cool completely before beginning installation
- Lift and secure the vehicle safely on jack stands rated for the vehicle weight
- Remove the factory exhaust system from the catalytic converter outlet rearward, retaining all O2 sensor plugs and active exhaust harness connectors
- Install Corsa's 3.0-inch double X-pipe in place of the factory piping near the rear axles
- Connect the Corsa system rearward to the muffler sections and align the twin 4.5-inch Black tips within the rear bumper cutouts
- Reconnect the factory active exhaust module and all wiring harness connectors
- Tighten all clamps and hangers to factory torque specification
- Lower the vehicle and start the engine to verify proper seating, absence of exhaust leaks, and correct active valve operation in all drive modes
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