C8 Corvette Z06 CORSA Muffler Delete Cat-Back Exhaust (21113) Valved NPP Compatible (2023–2026)
If you want your 2023–2026 C8 Corvette Z06 to sound sharper, louder, and more exotic without losing factory mode control, the CORSA 21113 Muffler Delete Cat-Back Exhaust is built for exactly that. This is a no-tips cat-back system that reuses the stock rear bezels/tips and is engineered to retain full NPP valve functionality (quiet/civil at cruise, aggressive when you get into it) while cutting weight and increasing flow.
Product Details
The CORSA 21113 is a 3.0" dual rear-exit, valved NPP cat-back exhaust system designed specifically for the C8 Z06 LT6 platform. It features premium 304 stainless steel construction, braided stainless flex couplers, CORSA’s improved serviceable cast valve assemblies, and includes the wiring extensions and hardware needed for a direct-fit install. This is the system for owners who want the Z06 to sound like the exotic it is — with factory driving-mode control still working the way GM intended.
Why CORSA Leads
- Maintains NPP driving mode functionality: integrates to the stock actuators so Tour/Sport/Track behavior remains.
- Valved multi-path design: civil cold starts and cruising, aggressive when the valves open under throttle.
- Premium build quality: 304 stainless steel and CORSA engineering built for long-term durability.
- Direct-fit integration: designed around the C8 Z06 chassis packaging and valve orientation.
Benefits
- More aggressive exhaust tone than stock with an exotic, track-ready character
- Retains NPP valve control so you keep factory drive-mode behavior
- Weight savings compared to stock (CORSA publishes significant reduction for 21113)
- Improved exhaust flow for stronger throttle response
- Reuses stock bezels/tips (no-tip system for a clean OEM appearance)
Important Note on Drone / Sound Control
This specific system (21113) is designed as a muffler delete / Track-style solution and CORSA notes it does not include their No Drone RSC® technology. Instead, it uses a resonated sound tube intended to quiet the harshest frequencies in certain modes. Translation: this is for owners who want maximum presence and the most aggressive Z06 character while still keeping NPP valve control.
What to Expect After Installation
- Noticeably louder, sharper sound under throttle — true Z06 exotic character
- NPP modes remain functional (valves open/close based on drive mode)
- Weight reduction and improved flow vs the factory system
- Cold starts and cruising remain more controlled than a fixed non-valved setup
Technical Specifications
- Part Number: 21113
- System Type: Cat-Back (Dual rear exit)
- Pipe Diameter: 3.0"
- Valve Compatibility: Valved / Maintains NPP functionality
- Tip Type: None (reuses stock bezels/tips)
- Material: 304 stainless steel
- Construction Notes: serviceable cast valve assemblies, flex couplers, solid hangers, harness extensions
Installation Overview
This system is designed as a direct-fit, bolt-on installation using factory mounting locations. CORSA recommends professional installation. Due to GM factory tolerances, some C8 Z06 exhaust installs may require a GM valve relearn sequence to prevent warning lights after installation.
- Install Type: Bolt-on, no welding required
- Recommended: Professional installation
- Post-Install: Valve relearn may be required (varies by vehicle)
- Tip Note: No-tip system (reuses stock bezels/tips)
Corvette Compatibility
- Fits: C8 Corvette Z06 (2023–2026)
- Engine: 5.5L LT6
- Body Styles: Coupe and HTC (as applicable)
- Valves: Designed to maintain NPP driving mode functionality
Cross-Compatibility & Related Fitment
- Designed specifically for the C8 Corvette Z06 platform
- Not intended for C8 Stingray or E-Ray fitment
- Pairs well with other sound/heat-management upgrades depending on your build goals
What Corvette Owners Say
“Exactly what I wanted — the Z06 finally sounds as wild as it looks, and the mode control still works.”
Shop CORSA Exhaust Systems
Browse more CORSA options (Sport, Xtreme, valved, non-valved) here:
Shop CORSA Corvette Exhaust Systems
Since 2007, Custom Corvette Accessories (CCA) has helped Corvette owners choose the right parts the first time with trusted brands, fast shipping, and enthusiast-level support.
Ready to upgrade your Z06 sound? Order the CORSA 21113 muffler delete cat-back today and bring out the full character of the LT6 — with factory mode control still intact.
