C7 Corvette Grand Sport CORSA 14776 NPP Axle-Back Exhaust
Upgrade your 2017–2019 C7 Corvette Grand Sport (Automatic) with the CORSA 14776 NPP axle-back exhaust system, engineered to retain full factory valve functionality while delivering a wide, controllable sound range with zero drone.
Constructed from premium 304 stainless steel, the CORSA 14776 features a straight-through, high-flow design paired with 4.5" quad polished Pro-Series tips for a clean, aggressive OEM+ appearance. CORSA’s patented Reflective Sound Cancellation® (RSC®) technology targets unwanted frequencies, allowing aggressive tone under throttle without intrusive cabin resonance.
With the factory NPP valves retained, this system provides a noticeable sound difference between driving modes — refined and controlled during cruising, and authoritative under heavy acceleration — all while maintaining daily drivability.
Why choose CORSA 14776 for your Grand Sport
- Factory NPP valve retention for adjustable sound control
- Variable tone from Sport to Xtreme based on drive mode
- RSC® technology eliminates highway drone
- 304 stainless steel construction for long-term durability
- 4.5" quad polished tips for a factory-plus appearance
What to expect after installation
- Noticeably stronger exhaust presence without harshness
- Clear sound separation between drive modes
- No cutting or welding — direct bolt-on installation
- Preserved daily comfort with aggressive capability on demand
- Made in the USA with a lifetime warranty (5 years on valves)
Fitment & compatibility (read carefully)
- C7 Corvette Grand Sport: 2017, 2018, 2019
- Automatic transmission ONLY
- Factory NPP exhaust REQUIRED
- Will NOT fit non-NPP vehicles
“The sound difference between modes is exactly what I wanted. Calm when cruising, aggressive when pushed — and zero drone.” – Laura P.
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Fast nationwide shipping — upgrade your C7 Corvette Grand Sport with confidence.
✅ In-stock items ship within 24–48 hours via Standard Ground.
✅ Free shipping items are available in the Continental US only.
✅ Custom quotes available for 2-Day, Next Day, or Saturday delivery.
✅ Custom or backordered items ship as soon as available.
