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Blacked Out Style for the Tremor EcoBoost Faithful
The CORSA 21185BLK brings a purpose built cat-back exhaust to the 2021-2024 Ford F-150 Tremor 3.5L EcoBoost, replacing the factory system with a straight through design that unlocks a deeper tone without adding cabin drone. Built from 304 stainless steel and finished with Black PVD tips, MPN 21185BLK pairs a resonated head pipe with CORSA's Reflective Sound Cancellation Technology for a refined driving experience.
Key Features
- 3.0 inch dual rear exit cat-back exhaust with resonated head pipe
- 304 stainless steel construction for long term corrosion resistance
- 4.0 inch single Black PVD dual wall straight cut tip
- Reflective Sound Cancellation Technology eliminates drone at cruise
- Delivers 16 percent more airflow than the factory exhaust
- Sheds 7 pounds versus the stock system
- Sport sound level tuned specifically for the 3.5L EcoBoost engine
- Bolt on installation using factory hangers, no welding required
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2021-2024 | Ford | F-150 | Tremor EcoBoost SuperCrew 5.5ft Bed |
| 2024-2025 | Ford | F-150 | Lariat EcoBoost Black Appearance Package SuperCrew 5.5ft Bed |
Specifications
| Detail | Value |
|---|---|
| MPN | 21185BLK |
| Pipe Diameter | 3.0 inch |
| Tip Size | 4.0 inch single |
| Tip Finish | Black PVD dual wall straight cut |
| Sound Level | Sport |
| Material | 304 Stainless Steel |
| Flow Increase | 16 percent |
| Weight Savings | 7 lbs |
| Sound Increase | +7.9 dB over stock |
What's Included
- CORSA 21185BLK cat-back exhaust assembly
- Black PVD 4.0 inch dual wall tip
- All mounting hardware and clamps
- Printed installation instructions
About CORSA Performance
CORSA Performance designs and manufactures American made exhaust systems in Berea, Ohio. Every CORSA system uses patented Reflective Sound Cancellation Technology to remove unwanted drone frequencies while preserving an aggressive tone under acceleration, backed by a limited lifetime warranty.
Related Parts on Our Site
- Corsa 2021-2023 Ford F-150 SuperCrew 3.5L V6 Sport Cat-Back Dual Rear Exit Polished
- Corsa 2021-2023 Ford F-150 SuperCrew 5.0L V8 Xtreme Cat-Back Dual Rear Exit Black PVD
Frequently Asked Questions
What is the 21185BLK?The 21185BLK is a CORSA Sport level 3.0 inch cat-back exhaust system built for the 2021-2024 Ford F-150 Tremor 3.5L EcoBoost, featuring Black PVD 4.0 inch tips and a dual rear exit design.
How is the 21185BLK different from the 21185?The 21185BLK uses Black PVD finished tips while the standard 21185 uses polished stainless tips. Both share identical Sport level tuning and performance specs.
Does the 21185BLK require any cutting or welding?No, the 21185BLK bolts directly to the factory hangers with no cutting, drilling, or welding required.
What sound level does the 21185BLK offer?The 21185BLK is available in CORSA's Sport sound level, tuned for a moderate, drone free driving experience with a noticeable increase in tone under acceleration.
How much airflow improvement does the 21185BLK provide?CORSA rates the 21185BLK at a 16 percent increase in exhaust flow compared to the factory system.
Is the 21185BLK legal in all 50 states?Yes, cat-back systems like the 21185BLK do not alter emissions equipment and are legal for sale and use in all 50 states.
Will the Black PVD finish fade or discolor?CORSA's Black PVD coating is designed to resist fading and discoloration under normal driving and heat conditions.
Does the 21185BLK come with a warranty?Yes, CORSA backs the 21185BLK with a limited lifetime warranty against manufacturing defects.
Installation Instructions
- Raise and safely support the vehicle on jack stands or a lift.
- Remove the factory exhaust system starting at the mid pipe connection.
- Disconnect factory hangers from the rubber isolators and remove the stock muffler assembly.
- Test fit the CORSA 21185BLK cat-back assembly using the factory hangers.
- Install provided clamps at each pipe connection without fully tightening.
- Adjust tip alignment in the rear valance opening for even clearance.
- Tighten all clamps to the specified torque once alignment is confirmed.
- Start the vehicle and inspect for leaks or contact points before road testing.
WARNING: This product can expose you to chemicals including nickel compounds, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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