C7 Corvette Grand Sport Borla ATAK 11863CB with Standard Exhaust (2017-2019)
Borla built the ATAK 11863CB axle-back for C7 Grand Sport owners running the standard (non-NPP) exhaust who want a louder, sharper sound personality with a clean quad-center exit look. This system keeps the aggressive ATAK character when you get on it, while staying comfortable on the highway with a no-drone cruising tone.
Borla 11863CB Product Details
- System type: Axle-Back
- Sound level: ATAK (most aggressive Borla sound profile)
- Fitment focus: C7 Grand Sport WITHOUT NPP (standard exhaust)
- Years: 2017–2019
- Engine: LT1 (6.2L)
- Transmission: Grand Sport Automatic
- Valves: Includes AFM valves and does not include NPP valves
- Pipe diameter: Single 2.75" into muffler, dual 2" out
- Tip style/finish: Dual 4.25" round intercooled ceramic black tips on each muffler
- Tip exit: Quad center rear exit
- Construction: Premium T-304 stainless steel
- Upgrade path: Add X-Pipe 60548 to create a Cat-Back system
- Warranty: Million-Mile Warranty (non-moving parts)
Why C7 Grand Sport Owners Choose Borla ATAK 11863CB
- Maximum ATAK sound personality for non-NPP Grand Sport builds
- Keeps AFM valve functionality while staying non-NPP (standard exhaust) compatible
- Quad center-exit look with durable intercooled ceramic black tips
- Easy upgrade path to a full cat-back later with X-Pipe 60548
What to Expect After Installation
- More presence at throttle with a sharper ATAK edge
- A clean, aggressive rear finish with quad center-exit ceramic black tips
- Comfortable cruising character designed to avoid cabin drone
Corvette Compatibility
- C7 Corvette Grand Sport (LT1) WITHOUT NPP: 2017, 2018, 2019
- Fits: Grand Sport Automatic Transmission
- Not compatible: C7 Grand Sport Manual Transmission
Important install note: This system includes AFM valves and does not include NPP valves. It’s a match for standard (non-NPP) exhaust cars, and it can also be used when NPP is disabled. Warranty coverage is Million-Mile for non-moving parts, exhaust valves are covered for 1 year, and original equipment AFM/NPP actuator failures are not covered.
FREE SHIPPING in the USA (where applicable). Order the Borla ATAK 11863CB today and give your 2017–2019 C7 Grand Sport (Automatic, non-NPP) a true ATAK personality with quad center-exit 4.25" ceramic black tips.
✅ 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.
