This is CORSA's 3.0 inch valved cat-back for the Shelby GT500's Predator V8, built entirely from 304 stainless steel and fitted with CORSA's own cast valve assembly, which plugs into the factory active exhaust so the car keeps its OEM valve control instead of running an aftermarket controller. A Double Helixx dual crossover X-pipe and straight-through mufflers lift flow by close to 20 percent over stock, and the mufflers are tuned with CORSA's Reflective Sound Cancellation so the system runs more than 10 decibels above stock with the valves open while staying free of drone at cruise. It exits dual rear on twin 5.0 inch dual-wall stainless tips in a polished carbon fiber finish, bolts on in about an hour with no cutting or welding, and is engineered and built in Berea, Ohio.
Specifications
| Type | Valved cat-back exhaust system (CORSA) |
| Position | Dual rear exit |
| Diameter | 3.0 in |
| Material | 304 stainless steel |
| Tips | Twin 5.0 in dual-wall stainless, polished carbon fiber |
| Crossover | 3.0 in Double Helixx dual crossover X-pipe |
| Valve Control | CORSA cast valve assembly, integrates with OEM active exhaust |
| Sound Control | Reflective Sound Cancellation (RSC), no drone at cruise |
| Flow | Approximately 20% better than stock |
| Installation | Bolt-on, approximately 1 hour |
| Origin | Engineered and manufactured in Berea, Ohio, USA |
| Warranty | Lifetime |
| Quantity | 1 (complete cat-back system) |
| Part Number | 21292CF |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2022 | Ford | Mustang | Shelby GT500 |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
