C8 Corvette Stingray CORSA Xtreme Muffler Delete Cat-Back Exhaust (2020–2026) — 21106 / 21106BLK / 21106CF
If you want your C8 Corvette Stingray to sound like it looks—sharp, exotic, and aggressive—this is the move. The CORSA 21106-series is a muffler delete cat-back designed for C8 Corvettes equipped with the Factory NPP option, built to deliver maximum volume and presence while still leveraging CORSA’s RSC® (Reflective Sound Cancellation) No Drone Technology for a cleaner cruising experience.
Important fitment note (read this): “NPP” refers to GM’s factory dual-mode performance exhaust option. This muffler delete configuration does not provide NPP sound-level control (it’s the “No (Muffler Delete)” NPP control configuration). It is intended for owners who do not want quiet mode and want a consistent, aggressive exhaust tone.
Tip Options / Part Numbers
- 21106 — Pro-Series tips (Polished)
- 21106BLK — Pro-Series tips (Black PVD)
- 21106CF — Carbon Fiber tips
Why C8 Owners Choose CORSA Muffler Delete (21106 Series)
- Maximum aggression: Muffler delete design for a louder, sharper exhaust note
- No-drone engineering: CORSA RSC® technology targets cabin resonance at cruise
- High-flow 3.0" system: Built for performance and throttle response
- Premium materials: T304 stainless construction for long-term durability
- Direct-fit install: Bolt-on design with included hardware (no welding)
Valve Logic
- NPP sound-level control: No (this is the Muffler Delete configuration)
- AFM/DFM valves: This 21106-series configuration is commonly set up to retain AFM/DFM valve functionality
In plain English: this system is for the owner who wants one consistent, loud personality (no quiet mode), while keeping the car happy during cylinder-deactivation operation (AFM on 2020–2021 / DFM on 2022–2026) when applicable.
Real-World Expectations (Sound + Driving)
- Cold start: more dramatic and attention-getting
- Acceleration: aggressive, higher-energy tone typical of CORSA’s “tuned performance” character
- Cruising: engineered to reduce drone compared with “generic muffler delete” setups
- Track / events: this is the louder choice—ideal if you’re chasing presence
Technical Specifications
- CORSA Part Numbers: 21106 / 21106BLK / 21106CF
- Vehicle: 2020–2026 Corvette C8 Stingray (Coupe + Convertible/HTC)
- Engine: 6.2L LT2
- System Type: Cat-Back (Muffler Delete configuration)
- Pipe Diameter: 3.0"
- Material: T304 Stainless Steel
- Sound Change vs Stock: CORSA lists 21106 as +13 dB louder than stock
- Weight Savings: CORSA lists 21106 as -18 lbs vs stock
- Factory NPP Option: Intended for vehicles equipped with Factory NPP or Cars without NPP
Installation Overview
- Install Type: Direct bolt-on (no welding required)
- Recommended Tools: basic hand tools + safe lift method
- Time Estimate: typically 1–3 hours depending on experience
- Pro Tip: CORSA notes that due to GM tolerances, some C8 exhaust installs may require a GM valve relearn sequence to mitigate a CEL (GM Document ID 5406413).
- Recommendation: Professional installation is suggested if you want the cleanest fit + fastest troubleshooting
Corvette Compatibility
- C8 Corvette Stingray: 2020, 2021, 2022, 2023, 2024, 2025, 2026
- Body Styles: Coupe + Convertible/HTC
- Factory Exhaust Compatibility: Fits C8 Corvette Stingray models with or without factory NPP
- Valve Handling: Factory NPP valve motors are reused on supplied brackets for ECU compliance (when equipped)
- Sound Behavior: Muffler delete design keeps exhaust fully open at all times
Looking for a different CORSA “personality”? Some owners prefer a system that keeps full NPP sound-mode control, while others want the loudest possible setup. If you’re not 100% sure which direction you want to go, start with our full CORSA collection and compare your options by year/model.
Shop All CORSA Corvette Exhaust Systems →
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