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The Corsa 21389 brings a purpose-built cat-back exhaust to the 2025-2026 Ram 1500 RHO. Built around a 3.0-inch 304 stainless steel true dual path layout, the COR21389 routes exhaust through two mufflers with integrated X-pipes and Corsa's No Drone RSC Technology before exiting through dual wall 5.0-inch Satin Pro-Series flat cut tips. The result is a Sport-level exhaust note that is noticeably aggressive on cold start and under acceleration and completely quiet at highway cruise. Manufactured in the USA, covered by Corsa's Lifetime Warranty.
Key Features
- 3.0-inch 304 stainless steel true dual path cat-back: full replacement from the catalytic converter outlets rearward
- Two mufflers with integrated X-pipes: dual-chamber design with crossover pipes built in for balanced flow and tone
- Corsa No Drone RSC Technology: Reflective Sound Cancellation tuned specifically for the Ram 1500 RHO 3.0L Hurricane inline-6 eliminates highway cruise drone
- Dual rear exit with dual wall 5.0-inch Satin Pro-Series flat cut tips: one tip per side, polished satin stainless dual wall construction
- Sport sound level: aggressive on acceleration and cold start, completely silent at cruise
- Jekyll and Hyde character: the COR21389 delivers two entirely different personalities in one bolt-on system
- -10 lbs weight savings over stock: lighter system compared to the factory Ram RHO exhaust
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2025-2026 | Ram | 1500 | RHO Crew Cab - Excludes GT Package Exhaust |
Specifications
| Manufacturer | CORSA Performance |
|---|---|
| Manufacturer Part Number | 21389 |
| Product Type | Catback |
| Fitment Type | Vehicle specific |
| Part Number (MPN) | 21389 |
| System Type | Cat-Back |
| Pipe Diameter | 3.0 inches |
| Material | 304 Stainless Steel |
| Exit Style | Dual Rear Exit |
| Tip Size | 5.0 inches |
| Tip Style | Dual Wall Flat Cut |
| Tip Finish | Satin Pro-Series Polished Stainless |
| Sound Level | Sport |
| Sound Technology | No Drone RSC |
| Weight vs. Stock | -10 lbs |
| Flow Increase | +37% |
| Volume Increase | +15 dB over stock |
| Engine | 3.0L Hurricane Inline-6 Turbo |
What's Included
- Corsa 21389 cat-back exhaust system
- Two dual wall 5.0-inch Satin Pro-Series flat cut tips
- All necessary hardware, clamps, and hangers for installation
About CORSA Performance
CORSA Performance develops vehicle-specific and universal intake and exhaust components with an emphasis on application-specific engineering, durable materials, controlled sound, and precise fit. Product configuration and installation requirements remain exact-part-number specific.
Related CORSA Performance Products
- Corsa 25-26 RAM 1500 RHO Crew Cab 3.0L Turbo Cat-Back Dual Rear Exit w/ 5in Single Black Pro Series
- Corsa 25-26 RAM 1500 RHO Crew Cab 3.0L T Cat-Back Dual Rear Exit w/ 5in Single Gun Metal Pro Series
- Corsa 19-25 Chevy Silverado 1500 Crew Cab Cat-Back Dual Rear Exit w/ Twin 4.0in Black PC Pro-Series
Browse the CORSA Performance collection for related exhaust, intake, and engine-bay upgrades.
Frequently Asked Questions
Will this CORSA product fit my 2025-2026 Ram 1500?
That vehicle range is listed, but confirm the exact manufacturer part number, trim, cab or body style, factory exhaust or intake configuration, and every application note before ordering.
How should I choose the correct CORSA exhaust configuration?
Compare sound level, pipe diameter, exit location, tip finish, factory valve or active-exhaust requirements, cab and bed or body configuration, and the exact part number.
Does this CORSA exhaust require professional installation?
Vehicle-specific systems are generally bolt-on when the exact application matches. Universal components can require cutting and welding. Professional installation helps ensure alignment, clearance, sealing, and correct clamp torque.
Installation Instructions
Follow CORSA and vehicle service instructions. Support the vehicle safely, allow the exhaust to cool, verify all hangers and clearances, align the system before final tightening, check for leaks, and recheck clamp torque after the first heat cycle.
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