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SKU: 21058BLK | UPC: 847466021350
CORSA 21058BLK Xtreme 2.75" Cat-Back Exhaust with 4.5" Black Tips – Fits 2012–2021 Jeep Grand Cherokee SRT 6.4L HEMI
The CORSA Xtreme 21058BLK Cat-Back Exhaust is the premier performance upgrade for the 2012–2021 Jeep Grand Cherokee SRT 6.4L. Engineered, tested, and handcrafted in the USA, this system delivers CORSA’s loudest and most aggressive sound profile while maintaining zero interior drone thanks to patented Reflective Sound Cancellation® (RSC™) Technology.
Featuring full T304 mandrel-bent stainless steel construction, straight-through mufflers, and quad 4.5" Black PVD Pro-Series tips, this exhaust produces a deep V8 rumble at idle, an explosive roar under throttle, and dyno-proven gains of +18 HP and +22 lb-ft of torque. Designed as a direct bolt-on system using factory hangers, installation requires no cutting or welding.
If you want the most aggressive CORSA sound, premium materials, and lifetime durability, the 21058BLK Xtreme is the top-rated cat-back exhaust for the WK2 SRT platform.
Key Performance Benefits
- +18 HP / +22 lb-ft Torque: Unlocks the full potential of the 6.4L HEMI V8.
- +77% Flow Increase: Massive improvement in exhaust flow vs. stock.
- 21 lbs Lighter: Weight savings improve responsiveness and handling.
- Xtreme Sound Level: CORSA’s loudest, most aggressive tone with no drone.
- 2.75" Mandrel-Bent T304 Stainless Steel: Maximum durability and corrosion resistance.
- Quad 4.5" Black PVD Tips: Dual-wall, slash-cut design resists heat bluing and enhances rear appearance.
- Straight-Through Mufflers w/ RSC™: Drone-free cruising at highway speeds (65–75 mph).
What’s Included
- 2.75" Xtreme Cat-Back Exhaust System
- High-Flow RSC™ Mufflers
- Quad 4.5" Black PVD Pro-Series Tips
- Stainless Steel Clamps & Hardware Kit
- Detailed Installation Instructions
- Part Number: 21058BLK
- UPC: 847466021350
Fitment
- Make: Jeep
- Model: Grand Cherokee SRT (WK2)
- Engine: 6.4L HEMI V8
- Years: 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Note: For SRT models only. Does not fit Trackhawk 6.2L Supercharged. Compatible with most aftermarket rear bumpers. Tip adjustment may be required when equipped with factory tow package.
Why Choose CORSA?
- 25+ Years of Performance Exhaust Leadership
- Handcrafted in the USA from T304 Stainless
- Patented No-Drone RSC™ Technology
- Limited Lifetime Warranty on stainless steel construction
- Industry-leading sound engineering & fitment precision
Installation Details
- Difficulty: Moderate
- Tools Required: Basic hand tools, torque wrench, jack stands or lift
- Install Time: 60–90 minutes
- Torque Spec: 45 ft-lbs on supplied clamps
- Design: 100% bolt-on using factory hangers
Optional: Tuning may be required if used with long-tube headers or other major airflow modifications.
Frequently Asked Questions
Q: How loud is the Xtreme?
A: It is CORSA’s loudest system - deep at idle, aggressive under throttle.
Q: Does it drone on the highway?
A: No. RSC™ Technology eliminates drone at cruising speeds.
Q: Will it fit the Trackhawk?
A: No. The Trackhawk uses a different exhaust layout.
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: Ships same day or next business day when in stock
- Packaging: Heavy-duty box with internal foam protection
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