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Xtreme LT4 and LS7 Sound for the 2015-2019 C7 Corvette Z06, Grand Sport, and ZR1
The CORSA 14766 is a 2.75-inch Xtreme-level axle-back exhaust system built for the 2015-2019 Chevrolet Corvette C7 in Z06, Grand Sport, and ZR1 configurations with manual transmissions without factory NPP valve. For these high-performance Corvette variants, CORSA engineers the 14766's RSC technology to the LT4 supercharged V8's distinct acoustic character, delivering maximum aggressive Xtreme sound that is appropriately matched to Z06 and ZR1 performance levels. The system exits through twin 4.5-inch polished Pro-Series tips with a dual rear exit layout.
Key Features
- CORSA RSC technology at Xtreme level for LT4 and LS7 C7 Z06 and ZR1 character
- 2.75-inch mandrel-bent T304 stainless steel construction
- Twin 4.5-inch polished Pro-Series exhaust tips
- Xtreme sound level: maximum aggressive output for Z06 and ZR1 performance tier
- Fits 2015-2019 Corvette C7 Z06, Grand Sport (manual, w/o NPP), and ZR1
- CORSA limited lifetime warranty
- Made in Berea, Ohio, USA
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2015-2019 | Chevrolet | Corvette | Z06 |
| 2017-2019 | Chevrolet | Corvette | Grand Sport |
| 2019 | Chevrolet | Corvette | ZR1 |
Specifications
| Detail | Value |
|---|---|
| MPN | 14766 |
| UPC | 847466012914 |
| Pipe Diameter | 2.75 inches |
| System Type | Axle-Back |
| Sound Level | Xtreme |
| Tip Style | Twin 4.5-inch Polished Pro-Series |
| Exit | Dual Rear Exit |
| Material | T304 Stainless Steel |
| Transmission | Manual (without factory NPP valve) |
| Warranty | Limited Lifetime |
What's Included
- 1x CORSA 14766 Xtreme axle-back muffler assembly
- Twin 4.5-inch polished Pro-Series exhaust tips
- All hardware and clamps for bolt-on installation
About CORSA Performance
Founded in 1989 in Berea, Ohio, CORSA Performance invented Reflective Sound Cancellation technology and has engineered Corvette exhaust systems for over 30 years, including multiple OEM-collaboration programs with General Motors. Every CORSA system uses T304 aircraft-grade stainless steel with a limited lifetime warranty and is assembled in the USA.
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Frequently Asked Questions
What is the CORSA 14766?The CORSA 14766 is a 2.75-inch Xtreme axle-back exhaust for the 2015-2019 C7 Corvette Z06, Grand Sport, and ZR1 with manual transmissions and no factory NPP valve, delivering CORSA's maximum aggressive exhaust sound through twin 4.5-inch polished Pro-Series tips.
Does the 14766 fit the C7 Stingray?The CORSA 14766 is designed for the Z06, Grand Sport, and ZR1 C7 variants with manual transmission and no NPP valve. Stingray owners and those with the factory NPP valve should look at CORSA's valve-back systems (14762 and 14764).
Is the 14766 drone-free at highway speeds?RSC technology manages resonance at the Xtreme level. The Z06 and ZR1 LT4 engine's character is naturally more aggressive, and the Xtreme tuning reflects that. Highway cabin volume is higher than Sport but without the harshest drone peaks.
What is the difference between 14766 and 14766BLK?Both are the same Xtreme axle-back for the same Z06 platform. The 14766 uses polished stainless tips; the 14766BLK uses matte black PVD tips.
Does this require cutting or welding?No. The CORSA 14766 is a direct bolt-on axle-back replacement at factory mounting points. No cutting or welding required.
Is a tune required?No. The 14766 retains factory catalytic converters and does not alter engine management. No tune is required.
Does this fit the C7 Z06 with the automatic transmission?The CORSA 14766 is designed for manual transmission Z06 configurations without the factory NPP active exhaust valve. Verify your transmission and exhaust valve configuration before ordering.
What warranty does the 14766 carry?CORSA provides a limited lifetime warranty on the 14766 against defects in materials and workmanship when purchased from an authorized dealer.
Installation Instructions
- Safely raise and support the Corvette on rated jack stands or a lift
- Allow the factory exhaust to cool completely
- Disconnect the factory axle-back muffler assembly
- Remove the factory muffler and tip assembly
- Test-fit CORSA 14766 before tightening any hardware
- Attach to factory hangers and install all supplied hardware
- Torque all connections to specification and verify tip symmetry
- Start engine and inspect all connections for leaks
Prop 65 Warning: This product can expose you to chemicals including nickel compounds, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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