Corsa's Xtreme cat-back is a valved 3.0 in system in 304 stainless steel tuned for the CT5-V 3.0L Turbo. It plugs directly into the factory dual mode active exhaust module, so the stock drive modes still open and close the valves and swing the car between quiet and loud, over 5 dB above stock at full song. A 3.0 in double X-pipe replaces the restrictive crushed factory piping near the rear axle to raise flow about 10 percent, and Corsa's Reflective Sound Cancellation technology keeps the cabin drone free in every mode. Dual wall 4.5 in black PVD twin tips finish the system. Backed by a Limited Lifetime exhaust warranty with 5 years on the valves.
| Type | Cat-back exhaust, Xtreme, valved (dual rear exit) |
| Material | 304 stainless steel |
| Diameter | 3.0 in (double X-pipe) |
| Tips | 4.5 in black PVD, dual wall, twin |
| Valve | Integrates with factory active exhaust module |
| Technology | Reflective Sound Cancellation (RSC), no drone |
| Sound | Over 5 dB louder than stock |
| Warranty | Limited Lifetime exhaust, 5 year valves |
| Part Number | 21326BLK |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | Cadillac | CT5-V | 3.0L Turbo |
