This cat-back replaces the factory muffler and tailpipe with 3.0 inch 304 stainless tubing that exits ahead of the rear tire, the routing CORSA calls Front of Tire Exit. Reflective Sound Cancellation is CORSA's patented approach to tone, using chamber geometry to cancel the specific frequencies that cause cabin drone rather than packing the muffler with restrictive absorption material, so the truck is aggressive under acceleration and quiet at cruise. Performance is unaffected by the sound choice. The system flows 15 percent better than stock, weighs 35 lbs less than the factory unit, bolts on with no welding or cutting, and finishes in twin 3.5 inch dual walled polished stainless Pro tips. Printed instructions are included in the box, and it is made in the U.S.A.
Specifications
| Type | Cat-back exhaust system with Reflective Sound Cancellation (RSC) |
| Exit | Front of tire exit, twin tips |
| Pipe Diameter | 3.0 in |
| Material | 304 stainless steel |
| Tips | Twin 3.5 in dual walled Pro tips |
| Finish | Polished stainless |
| Wheelbase | 145 in |
| Flow | 15% better than stock |
| Weight | 35 lbs lighter than stock |
| Installation | Bolt-on, no welding required; printed instructions included |
| Quantity | 1 complete cat-back system |
| Part Number | 21333 |
| Warranty | Limited lifetime |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2020 | Ford | F-150 | King Ranch |
| 2015-2020 | Ford | F-150 | Lariat |
| 2016-2020 | Ford | F-150 | Limited |
| 2015-2020 | Ford | F-150 | Platinum |
| 2018-2020 | Ford | F-150 | Police Responder |
| 2016-2020 | Ford | F-150 | SSV |
| 2015-2020 | Ford | F-150 | XL |
| 2015-2020 | Ford | F-150 | XLT |
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
