Borla ATAK Cat-Back Exhaust System – 2020–2026 Chevrolet Corvette C8 6.2L | Carbon Fiber Tips | 140839CF

BOR Cat Back ATAK - Borla 2020 Chevrolet Corvette C8 6.2L ATAK 3in Exhaust System Dual Round Angle Cut Carbon Fiber Tips

From the factory, the mid-engine 2020 Chevrolet Corvette C8 Stingray is held back by a heavy, restrictive rear muffler assembly that isolates too much of the engine's sound. While a quiet ride is fine for a regular commuter car, a 6.2L LT2 V8 engine deserves a tone that matches its aggressive styling. The BOR Cat Back ATAK system (Part Number: 140839CF) replaces that quiet stock suitcase muffler with Borla's ultimate high-volume track sound configuration. This full 3-inch performance upgrade is engineered specifically for owners who want their mid-engine sports car to have a raw, high-pitched exotic race car scream under heavy throttle while keeping low-frequency cabin drone out of the picture during highway cruising.

The real engineering feat of this Borla ATAK system is how it solves the extreme heat and electronic valve challenges inherent to the C8 chassis. Because the exhaust layout is tightly enclosed directly behind the engine and transaxle, cheap kits can easily radiant dangerous heat into your rear trunk liner or nearby transmission wiring. Borla fixes this by wrapping critical sections of the high-grade 304 stainless steel piping with heavy-duty thermal heat shielding. To preserve your custom look, the system exits the rear valence through a striking set of quad 4-inch dual round, angle-cut carbon fiber tips featuring clean, bright metal inner sleeves, giving your Corvette a high-end supercar rear profile.

Features and Benefits

Aggressive Track-Level ATAK Volume

This kit delivers Borla's loudest, highest-pitched acoustic profile. By completely replacing traditional baffled mufflers with custom straight-through race cores, it gives your LT2 V8 a piercing, exotic bark when revving while controlling the deep, structural drone that causes interior cabin vibrations.

Premium Interwoven Carbon Fiber Tips

The system is finished at the rear bumper cover with four massive 4-inch round, angle-cut tips wrapped in real aerospace-grade woven carbon fiber. These lightweight outer shells insulate against heat and prevent exhaust soot discoloration far better than raw metal.

Patented SwitchFire Center Section

Instead of utilizing a standard cross-over X-pipe that can create turbulent air pockets and uneven backpressure, this kit incorporates Borla’s custom SwitchFire plumbing. This component blends the exhaust pulses from both cylinder banks smoothly to maximize high-RPM airflow and generate a uniquely crisp exhaust note.

Internal Polyphonic Tuning Cores

The internal muffler assemblies house nested pipes cut to specific geometric lengths and diameters. This design layout allows different sound frequencies to bounce together and harmonize, filtering out harsh, raspy pitch levels while retaining a clean, full-bodied muscle car growl.

Comprehensive Integrated Heat Shielding

To counter the high ambient temperatures trapped inside the C8's tight rear bumper cavity, this system features custom-contoured metal heat shields. These protective barriers keep your trunk plastics, reverse sensors, and factory wiring looms perfectly safe from exhaust heat damage.

Vehicle Fitment Matrix

This 3-inch premium cat-back racing exhaust system is engineered as a direct replacement for this specific mid-engine sports car setup:

Critical NPP and AFM Valve Valve Warning: This performance system is built with integrated physical valve mounts designed to accept your car's factory electronic Active Fuel Management (AFM) and dual-mode NPP valve actuator motors. You must bolt your stock electronic actuator motors onto these brackets during installation. After mounting the exhaust and plugging the harnesses back in, a valve recalibration service is required (following GM Document ID 5406413). We highly recommend taking your car to a local Chevrolet dealership or a specialized tuning shop to run the digital relearn procedure to avoid dashboard warning lights.

Technical Specifications

• Part Number: 140839CF

• System Style: Cat-Back Rear Performance Exhaust System

• Piping Diameter: Full 3-Inch Outer Diameter (Stepping down to 2.75" and 2" inside internal paths)

• Tubing Material: Mandrel-Bent Heavy-Wall 304 Stainless Steel

• Tip Configuration: Quad Rear Exit (Two Left, Two Right)

• Tip Finish: Woven Carbon Fiber with Bright Polished Internal Centers

• Tip Dimensions: 4-Inch Dual Round Angle-Cut Profiles

• Valves Included: Integrated mechanical valve plates for factory actuator relocation

Frequently Asked Questions (FAQ)

Will this Borla ATAK exhaust fit a 2020 C8 Corvette that came from the factory with standard base exhaust?

No, it will not fit a base exhaust model safely out of the box. This specific part number (140839CF) is engineered strictly for 2020 C8 Corvettes that came equipped from the factory with the optional NPP Dual-Mode performance exhaust package. The car's computer relies on specific wiring connectors to run the internal exhaust valves. If your car lacks the factory NPP option, the actuator plugs will not be present on your chassis.

What is the sound difference between this ATAK system and the regular Borla S-Type?

The S-Type system is built for drivers who want a deep, mature growl that sounds slightly louder than stock but remains mild around town. The ATAK system is Borla's full-track sound profile. It is significantly louder, higher-pitched, and far more aggressive when you stomp on the gas pedal. However, thanks to the internal polyphonic tuning chambers, the ATAK still cancels out interior cabin drone during highway cruising.

Why do I need to take the car to a dealer for a valve relearn after putting this system on?

The C8 Corvette's computer continuously monitors the exact open and closed millimeter positioning of the exhaust valves. When you unbolt the stock actuator motors and slide them onto the custom Borla brackets, the tiny alignment clearances change slightly. Without running the official GM valve recalibration tool to update the computer on these new positions, the car will assume the valves are jammed and trip a Check Engine Light.