C8 Corvette Z06 CORSA Valved Cat-Back Exhaust with NPP (21111) - 2023–2026
The CORSA 21111 Valved Cat-Back Exhaust is engineered for 2023–2026 C8 Corvette Z06 owners who want aggressive sound on demand while retaining full factory exhaust mode control. Designed specifically for the LT6-powered Z06, this system maintains NPP valve functionality, reuses the factory rear bezels/tips, and delivers a refined yet exotic exhaust note without interior drone.
Product Details
This system features 3.0" mandrel-bent 304 stainless steel tubing, CORSA’s patented Reflective Sound Cancellation (RSC®) technology, and a true valved multi-path design. When valves are closed, sound is controlled for comfortable cruising; when opened in Sport or Track modes, the exhaust delivers a sharp, high-revving tone worthy of the flat-plane LT6. This is the ideal solution for Z06 owners who want versatility without compromise.
Why CORSA Leads
- Maintains factory NPP control: valves integrate with OEM actuators and drive modes.
- RSC® No Drone Technology: eliminates cabin resonance during steady cruising.
- Exotic sound profile: engineered specifically for the C8 Z06 flat-plane V8.
- Premium construction: 304 stainless steel built for heat and longevity.
Benefits
- Aggressive exhaust tone under throttle with refined cruising behavior
- Full retention of NPP drive-mode functionality (Tour, Sport, Track)
- No drone during highway driving
- Improved exhaust flow and throttle response
- Uses factory bezels/tips for an OEM-plus appearance
What to Expect After Installation
- Sharper, more exotic Z06 sound when valves open
- Comfortable cruising with valves closed
- No check-engine lights when installed correctly
- Noticeable improvement in character without sacrificing drivability
Technical Specifications
- Part Number: 21111
- System Type: Valved Cat-Back Exhaust
- Pipe Diameter: 3.0"
- Valve Compatibility: Maintains factory NPP valves
- Sound Control: RSC® No Drone Technology
- Tips: None (reuses factory bezels/tips)
- Material: 304 stainless steel
Installation Overview
This exhaust installs using factory mounting locations and hardware. CORSA recommends professional installation. Some vehicles may require a GM valve relearn procedure after installation to ensure proper NPP operation.
- Direct bolt-on installation
- No cutting or welding required
- Valve relearn may be required (GM Document ID 5406413)
- Professional installation recommended
Corvette Compatibility
- Fits: C8 Corvette Z06 (2023–2026)
- Engine: 5.5L LT6
- Valves: Factory NPP retained
Cross-Compatibility & Related Fitment
- Designed exclusively for the C8 Z06 platform
- Not compatible with C8 Stingray or E-Ray models
- Pairs well with other CORSA valved exhaust configurations depending on sound preference
What Corvette Owners Say
“Perfect balance. Quiet when I want it, wild when I don’t. Exactly how a Z06 should sound.”
Shop CORSA Exhaust Systems
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CCA Brand Statement
Since 2007, Custom Corvette Accessories has helped Corvette owners choose the right exhaust the first time with trusted brands, expert support, and fast nationwide shipping.
Upgrade your Z06 the right way. Order the CORSA 21111 valved cat-back exhaust today and enjoy exotic sound with factory-level control.
