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Hurricane-Fed Sound With Zero Compromise: Corsa Cat-Back for the 2025-2026 Ram 1500 RHO
The Corsa 21389GNM delivers a full cat-back exhaust overhaul for the 2025-2026 Ram 1500 RHO. The 3.0-inch 304 stainless steel true dual path system routes through two mufflers with integrated X-pipes and Corsa's No Drone RSC Technology before exiting through dual wall 5.0-inch Gun Metal Pro-Series flat cut tips. The COR21389GNM produces a Sport-level exhaust note that is noticeably aggressive on cold start and under acceleration and completely silent at highway cruise. Made in the USA, backed 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 Gun Metal Pro-Series flat cut tips: one tip per side, gun metal coated dual wall stainless construction
- Sport sound level: aggressive on acceleration and cold start, completely silent at cruise
- Jekyll and Hyde character: the COR21389GNM 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
- 37% increase in exhaust flow: improved scavenging over the restrictive stock system
- +15 dB over stock: measurable and noticeable volume increase under throttle
- Made in USA: engineered and manufactured in Berea, Ohio
- Lifetime warranty: Corsa backs every exhaust system with a limited lifetime warranty
- Does not fit Ram 1500 models equipped with the GT Package Exhaust
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2025-2026 | Ram | 1500 | RHO (Crew Cab, 3.0L Turbo) |
Specifications
| Detail | Value |
|---|---|
| Part Number (MPN) | 21389GNM |
| Brand | Corsa Performance |
| 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 | Gun Metal Pro-Series Coated |
| 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 |
| Country of Manufacture | USA |
| Warranty | Lifetime Limited |
| UPC | N/A |
What's Included
- Corsa 21389GNM cat-back exhaust system
- Two dual wall 5.0-inch Gun Metal Pro-Series flat cut tips
- All necessary hardware, clamps, and hangers for installation
- Installation instructions
About Corsa Performance
Corsa Performance has been engineering and manufacturing exhaust systems in Ohio since the early 1990s. The COR21389GNM is part of Corsa's dedicated lineup for the 2025-2026 Ram 1500 RHO, built to match the Hurricane inline-6's unique firing sequence and deliver Sport-level sound through Corsa's patented RSC Technology. Every Corsa system is made in the USA and covered by a Lifetime Limited Warranty.
Frequently Asked Questions
Does the Corsa 21389GNM fit the 2025 and 2026 Ram 1500 RHO?Yes. The COR21389GNM is designed specifically for the 2025 and 2026 Ram 1500 RHO equipped with the 3.0L Hurricane turbocharged inline-6. It fits Crew Cab configurations and does not fit trucks equipped with the optional GT Package Exhaust.
What is the difference between the 21389GNM, 21389BPC, and 21389?All three SKUs share identical pipe diameter, muffler design, RSC technology, and Sport sound level. The only difference is the tip finish. The 21389GNM has Gun Metal Pro-Series coated tips, the 21389BPC has Black Pro-Series coated tips, and the 21389 has Satin Pro-Series polished stainless tips. Choose the finish that best complements your Ram RHO exterior.
Will the Corsa 21389GNM drone at highway speeds?No. Corsa's No Drone RSC Technology is tuned specifically for the Ram 1500 RHO 3.0L Hurricane inline-6 firing sequence. The system is completely silent behind the wheel at cruise and delivers its Sport-level note only under acceleration or on cold start.
Does the Corsa 21389GNM fit the Ram 1500 Rebel with the 3.0L engine?No. The COR21389GNM is engineered specifically for the Ram 1500 RHO trim. The non-RHO 3.0L Ram 1500 and the Rebel use a separate Corsa exhaust system. Verify trim fitment before ordering.
How much does the Corsa 21389GNM improve exhaust flow on the Ram 1500 RHO?The COR21389GNM delivers a 37% improvement in exhaust flow over the factory system. The improved scavenging supports increased top-end output from the 3.0L Hurricane inline-6 and reduces backpressure compared to the restrictive stock exhaust.
Are the gun metal tips on the 21389GNM painted or coated?The 5.0-inch tips are Gun Metal Pro-Series dual wall flat cut tips with a gun metal coating applied over stainless steel construction. Routine maintenance with a dedicated exhaust tip cleaner helps preserve the finish over time.
Is the Corsa 21389GNM a bolt-on installation for the Ram 1500 RHO?Yes. The COR21389GNM is engineered as a direct bolt-on cat-back replacement for the 2025-2026 Ram 1500 RHO. No cutting, welding, or modifications to the factory exhaust hangers or catalytic converters are required. Professional installation is recommended for proper alignment and clamp torque.
What warranty comes with the Corsa 21389GNM?Corsa backs the COR21389GNM with a Lifetime Limited Warranty covering defects in materials and workmanship for as long as you own the vehicle. This is one of the strongest warranties available in the performance exhaust industry.
Installation Notes
- Allow the Ram 1500 RHO to cool completely before beginning
- Lift and support the truck safely on rated jack stands
- Remove all factory exhaust components from the catalytic converter outlets rearward, retaining all hangers and hardware for reference
- Install the Corsa 21389GNM true dual cat-back, sliding the integrated X-pipe muffler section into position at the converter outlets
- Route both rear pipes over the axle and into position, seating all hangers into the factory rubber grommets
- Slide the dual wall 5.0-inch Gun Metal Pro-Series tips onto each tailpipe and adjust for equal depth and rotation within the bumper cutouts
- Torque all clamps from front to rear at 45 ft-lbs
- Lower the truck and start the engine to verify fit, check for exhaust leaks, and confirm Sport-level exhaust tone
- Re-check and re-torque all clamps after the first heat cycle once the system has fully cooled
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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