Borla ATAK Axle-Back Exhaust for C7 Corvette Z06 with NPP (11903CB)
Borla ATAK 11903CB is the axle-back for 2015–2019 C7 Corvette Z06 owners who want an aggressive ATAK sound while keeping NPP dual-mode valve functionality. This version adds a stealthier finish with intercooled ceramic black tips, giving the rear a darker, high-contrast look without changing your factory valve behavior.
Borla 11903CB Product Details
- System type: Axle-Back
- Sound level: ATAK (aggressive)
- Fitment focus: C7 Z06 WITH NPP valves (retains NPP); system is built without AFM valves
- Engine: LT4 (Z06)
- Pipe diameter: 2.75"
- Exit: Quad center rear exit
- Tips: Dual 4.25" round intercooled T-304 stainless tips on each muffler (quad total) with high-temp ceramic black finish
- Construction: Premium T-304 stainless steel, mandrel-bent
- Upgrade path: Add Borla X-Pipe 60548 to create a Cat-Back system
- Warranty: Million-Mile Warranty for non-moving parts; exhaust valves covered for 1 year (OE AFM/NPP actuator failures are not covered)
Why Z06 Owners Choose ATAK 11903CB (Street Builds)
- More bite and volume than stock while keeping the NPP valve function
- ATAK sound character with a no-drone sound strategy designed for in-cabin comfort
- Ceramic black tips deliver a darker rear finish that looks right on a Z06
- Quad center-exit layout keeps the factory-inspired C7 rear styling
What to Expect After Installation
- Stronger sound presence when you roll into the throttle
- A sharper, more aggressive exhaust note than stock
- Factory-style valve behavior retained through the NPP setup
Corvette Compatibility
- Fits 2015–2019 Chevrolet Corvette C7 Z06 with NPP dual-mode valves (Coupe or Convertible).
- Transmission: Automatic or Manual (Z06).
- Also listed for: 2017–2019 C7 Grand Sport with NPP, manual transmission only.
Ready to upgrade? Order the Borla ATAK 11903CB today and give your C7 Z06 a louder, sharper voice with the ceramic black tip finish—while keeping the factory NPP valve functionality.
✅ In-stock items ship in 1–2 business days 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.
