C8 Corvette Stingray CORSA Cat-Back Exhaust with NPP (2020–2026) — 21103 / 21103BLK / 21103CF
If your C8 Stingray came from the factory with NPP (Performance Exhaust / dual-mode valves), the CORSA 21103 is designed to keep that factory sound-mode control while changing the character, flow, and volume of the system. This setup is built for owners who want a more aggressive CORSA tone while still keeping Tour / Sport / Track behavior through the factory NPP valve control.
Important Fitment Logic
- This system is intended for C8 Stingrays equipped with factory NPP.
- NPP valves: Retained (keeps drive-mode sound control).
- AFM/DFM valves: Eliminated (AFM on 2020–2021; DFM on 2022–2026).
- If you are unsure whether your Corvette has NPP from the factory, confirm your build/options before ordering.
Tip Options (Choose Your Finish)
- 21103: Polished tips
- 21103BLK: Black tips
- 21103CF: Carbon fiber tips
Why Choose CORSA 21103 for Your C8 Stingray?
- Keeps NPP sound control: Maintains factory drive-mode valve behavior.
- Deletes AFM/DFM valve function: Removes the 4-cylinder valve hardware behavior from the system.
- Performance + weight savings: CORSA lists weight savings for 21103 versus stock.
- Direct-fit install: Bolt-on design using factory mounting locations.
- Made from premium stainless: CORSA C8 systems are built with performance-grade materials and construction.
Performance Notes (CORSA Published Data)
- Part # 21103: CORSA lists 9 dB louder than stock and 1 dB quieter than stock depending on mode/condition, with weight savings versus stock.
- Vehicle fitment (CORSA listing): 2020–2026 C8 Stingray Coupe and HTC are explicitly listed under this NPP platform.
NPP vs AFM/DFM (Quick Explanation)
NPP is the factory dual-mode exhaust option that opens/closes valves to change exhaust sound by drive mode. AFM/DFM relates to cylinder-deactivation behavior (V4 mode) and can change exhaust resonance characteristics during light cruise. The 21103 keeps NPP control but eliminates AFM/DFM valve functionality.
Installation Overview
- Install type: Direct bolt-on (no welding)
- Recommended: Professional installation for best fit and valve calibration procedure
- Post-install note: Some C8s may require a GM valve relearn/calibration procedure to avoid warnings.
Corvette Compatibility
- Fits: C8 Corvette Stingray (2020–2026) equipped with factory NPP
- Body styles: Coupe and HTC
- Valve logic: Keeps NPP / Eliminates AFM (2020–2021) or DFM (2022–2026)
Since 2007, CCA has helped Corvette owners choose the right parts the first time — with fast shipping and Corvette-enthusiast support.
Fast nationwide shipping (1–2 days on in-stock items). Order the CORSA 21103 system today and keep your factory NPP control with a more aggressive CORSA tone.
