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CORSA 14776BLK Xtreme Valve-Back 2014-2019 C7 Corvette NPP Auto
CORSA 14776BLK Xtreme Valve-Back 2014-2019 C7 Corvette NPP Auto
CORSA 14776BLK Xtreme Valve-Back 2014-2019 C7 Corvette NPP Auto
CORSA 14776BLK Xtreme Valve-Back 2014-2019 C7 Corvette NPP Auto
CORSA 14776BLK Xtreme Valve-Back 2014-2019 C7 Corvette NPP Auto
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CORSA 14776BLK Xtreme Valve-Back Exhaust for 2014-2019 Corvette C7 Stingray Grand Sport Auto with Factory NPP - Black Tips

COR14776BLK
847466020704
Axle Back
5 Units In Stock - Ships Next Business Day
$ 3,225.99 $ 2,959.99
$ 2,959.99

Blacked-Out NPP Valve-Back Xtreme Sound for the C7 Corvette Stingray and Grand Sport

The CORSA 14776BLK is the matte black tip variant of the NPP-integrated Xtreme valve-back exhaust system for the 2014-2019 Chevrolet Corvette C7 Stingray and 2017-2019 Grand Sport in automatic transmission configurations with the factory NPP active exhaust valve. Delivering the same RSC-engineered Xtreme-open and Sport-closed valve performance as the polished 14776, the 14776BLK exits through quad 4.5-inch matte black PVD Pro-Series tips for a stealthier aesthetic. Built from 2.75-inch mandrel-bent T304 stainless steel throughout.

Key Features

  • CORSA RSC technology engineered to work with the factory NPP active exhaust valve
  • 2.75-inch mandrel-bent T304 stainless steel construction
  • Quad 4.5-inch matte black PVD Pro-Series exhaust tips
  • Xtreme open-mode sound plus refined closed-mode character via NPP valve
  • Fits 2014-2019 C7 Stingray and 2017-2019 Grand Sport automatic with factory NPP
  • CORSA limited lifetime warranty
  • Made in Berea, Ohio, USA

Vehicle Fitment

Year Range Make Model Trim
2014-2019 Chevrolet Corvette Stingray
2017-2019 Chevrolet Corvette Grand Sport

Specifications

Detail Value
MPN 14776BLK
UPC 847466012877
Pipe Diameter 2.75 inches
System Type Valve-Back (NPP)
Sound Level Xtreme (open) / Sport (closed)
Tip Style Quad 4.5-inch Matte Black PVD Pro-Series
Exit Quad Rear Exit
Material T304 Stainless Steel
Transmission Automatic with factory NPP valve
Warranty Limited Lifetime

What's Included

  • 1x CORSA 14776BLK Xtreme valve-back muffler assembly
  • Quad 4.5-inch matte black PVD 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. The 14776BLK delivers the same NPP-integrated RSC performance as the polished 14776 with a blacked-out finish that complements dark exterior packages and aftermarket wheels. Every system is assembled in the USA from T304 stainless steel with a limited lifetime warranty.

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Frequently Asked Questions

What is the CORSA 14776BLK?

The CORSA 14776BLK is a 2.75-inch Xtreme valve-back exhaust for the 2014-2019 C7 Corvette Stingray and 2017-2019 Grand Sport automatic with factory NPP, delivering Xtreme sound in open NPP mode and refined character in closed mode through quad matte black PVD 4.5-inch tips.

How does the 14776BLK differ from the 14776?

Both are the same Xtreme NPP valve-back exhaust with identical fitment and sound character. The 14776 uses polished stainless quad tips; the 14776BLK uses matte black PVD quad tips for a stealthier look.

Does the 14776BLK work with the factory NPP driving modes?

Yes. The CORSA 14776BLK integrates with the factory NPP valve. Tour mode closes the valve for quieter operation; Sport and Track modes open it for full Xtreme output.

Is the 14776BLK drone-free?

Yes. RSC technology eliminates highway drone resonance in both NPP valve states.

Does this fit manual transmission C7 Corvettes?

No. The CORSA 14776BLK is for automatic C7 Corvettes with the factory NPP valve. Manual-trans owners should look at the 14764 valve-back or the 14766BLK axle-back.

Is installation a bolt-on process?

Yes. The CORSA 14776BLK uses factory mounting points and requires no cutting or welding.

Is a tune required?

No. The 14776BLK retains factory catalytic converters and does not affect engine management.

What warranty does the 14776BLK carry?

CORSA provides a limited lifetime warranty on the 14776BLK against defects in materials and workmanship when purchased from an authorized dealer.

Installation Instructions

  1. Safely raise and support the Corvette on rated jack stands or a lift
  2. Allow the factory exhaust to cool completely
  3. Locate the factory NPP valve and identify the valve-back section
  4. Disconnect the factory muffler assembly at the NPP valve outlet
  5. Test-fit CORSA 14776BLK before tightening any hardware
  6. Attach to factory hangers and NPP valve outlet with all supplied hardware
  7. Torque all connections to specification and verify tip alignment
  8. Start engine, cycle NPP modes, 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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