C7 Corvette Grand Sport CORSA Xtreme Axle-Back Exhaust 14766BLK (2017–2019, Manual Only)
The CORSA Xtreme 14766BLK is a high-impact axle-back upgrade for 2017–2019 C7 Corvette Grand Sport owners who want aggressive sound without the annoying highway drone. With quad black Pro-Series tips and CORSA’s signature acoustic tuning, this system delivers a sharp, race-inspired tone under throttle while keeping cruising comfort in check.
Product Details
- CORSA Part Number: 14766BLK
- System Type: Axle-back exhaust
- Sound Level: CORSA Xtreme
- Tip Style: Quad 4.5" Black Pro-Series Tips
- Material: 304 stainless steel
- Made In: USA
Why CORSA (RSC® No-Drone Technology)
CORSA uses Reflective Sound Cancellation® (RSC®) to target and reduce the frequencies that cause drone. The result is an exhaust that’s aggressive when you get into it, but noticeably cleaner inside the cabin during steady-speed cruising compared to typical “loud” axle-backs.
Key Benefits (Why Grand Sport Owners Choose 14766BLK)
- Xtreme tone: loud, sharp, and track-inspired under acceleration
- No-drone cruising: RSC® helps control cabin resonance at cruise
- Black tips: bold rear styling with quad Pro-Series appearance
- Direct-fit: bolt-on axle-back design (no welding required)
- Built to last: 304 stainless steel construction for corrosion resistance
What to Expect After Installation
- More aggressive startup, idle, and throttle sound
- A sharper, tuned performance sound character (not a “boomy” tone)
- Cleaner highway behavior versus many high-volume systems
- A major visual upgrade from quad black Pro-Series tips
Technical Specifications
- Part Number: 14766BLK
- Placement: Rear / axle-back
- Tip Quantity: Quad
- Tip Finish: Black
- Material: 304 stainless steel
- Drone Control: RSC® technology
Installation Overview
- Install Type: Direct bolt-on axle-back
- Cutting/Welding: Not required
- Tools: Basic hand tools
- Estimated Time: Typically 1–2 hours
- Note: Professional installation recommended if you want perfect tip alignment
Corvette Compatibility
- Fits: C7 Corvette Grand Sport (2017, 2018, 2019) Coupe and Convertible
- Transmission: Manual only
- Will NOT fit: Grand Sport Automatic transmission
- Valve Note: This is a non-NPP style system. If your Grand Sport is equipped with factory NPP valves, this setup can still be used by retaining/hanging the factory valve actuators so the car continues to see them—however you will lose the factory quiet-mode valve function.
Cross-Compatibility & Fitment Notes
- Designed for C7 Corvette Grand Sport manual fitment
- Always verify transmission before ordering (manual vs automatic is critical on GS)
- If your goal is maximum volume, CORSA Xtreme is CORSA’s most aggressive sound level
What Corvette Owners Say
“The Xtreme sound is exactly what I wanted—aggressive, clean, and no drone on the highway. The black tips look perfect on the rear.”
Since 2007, Custom Corvette Accessories has helped Corvette owners choose the right parts the first time—fast shipping, real support, and fitment clarity you can trust.
Ready to upgrade your C7 Corvette Grand Sport (manual) sound? Order the CORSA Xtreme 14766BLK and get the aggressive tone you want with a cleaner cruising experience.
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