How to Upgrade Your C8 Corvette Exhaust (2020-2026)

A C8 Corvette exhaust upgrade is the single most rewarding modification you can make to a 2020–2026 Stingray, unlocking the full voice of the mid-mounted 6.2L LT2 V8 while shedding weight from the rear of the car. The factory LT2 makes 490 hp and 465 lb-ft—or 495 hp and 470 lb-ft with the optional NPP performance exhaust—but the stock muffler assembly is heavy and deliberately muted. At NLP Performance in Tampa, FL, the C8 exhaust is one of the most-requested jobs that rolls through our shop, and this guide covers exactly what to buy and how to install it.

Why Upgrade the C8 Corvette Exhaust?

Upgrading the C8 Corvette exhaust improves sound, saves weight, and frees a small amount of horsepower from the 6.2L LT2 V8. The naturally aspirated LT2 is rated at 490 hp at 6,450 rpm and 465 lb-ft at 5,150 rpm; adding the factory NPP sport exhaust raises those figures to 495 hp and 470 lb-ft. A Z51-equipped Stingray reaches 60 mph in 2.9 seconds, so the powertrain is already ferocious—what most owners chase is the theater of an unrestricted V8.

The biggest gains from a bolt-on exhaust are acoustic and physical rather than dyno-chart-shattering. A premium titanium system like the Akrapovic Slip-On Line is roughly 47% lighter than the stock sport exhaust—a 33.7 lb reduction hung directly over the rear axle, which sharpens turn-in and rotation. On the dyno, Akrapovic measures a modest 4.5 hp and 6.1 lb-ft gain over the factory unit, because the LT2 is a naturally aspirated engine with limited restriction to remove. The real story is the noise: a deep V8 throb at idle that builds into a rich, metallic roar past 4,000 rpm.

Slip-On vs. Cat-Back: Which C8 Exhaust Do You Need?

A slip-on (also called axle-back) replaces only the rear muffler and tailpipe section, while a cat-back replaces everything from the catalytic converters back, including the mid-pipe. For the C8 Corvette, both bolt to factory hardware, retain the emissions equipment, and integrate with the NPP electronic valves—the difference is how much of the system you swap and how much volume you gain.

Choose a slip-on if…

You want the biggest weight savings, the cleanest OEM-plus install, and a refined—not obnoxious—sound. The Akrapovic Slip-On Line is the definitive example: titanium construction, factory valve integration, and a two-hour install with no tune required.

Choose a cat-back if…

You want maximum volume and drone control for less money. Cat-backs from Borla, aFe, and MBRP use larger-diameter T304 stainless piping and a range of muffler valving—from Borla’s aggressive S-Type to the patent-pending, ultra-loud ATAK—so you can dial the character to taste. Prices start well below any titanium slip-on.

Best C8 Corvette Exhaust Options Compared

The best C8 Corvette exhaust for most drivers is the Akrapovic Slip-On Line (Titanium) for weight savings and refinement, or the MBRP T304 cat-back for the best value. Here are five proven systems for the 2020–2026 Stingray, ranked by sound character, construction, and price. All fit the 6.2L LT2 and work with the factory NPP valve system.

The Top Pick: Akrapovic Slip-On Line (Titanium)

The Akrapovic Slip-On Line is the premium C8 Corvette exhaust benchmark. Hand-built from high-grade titanium with square, black-interior tailpipes, it is roughly 47% lighter than the stock sport exhaust—a 33.7 lb reduction—and its dual connecting tubes use different diameters to add stiffness and enrich the tone. Because it is a true slip-on, it retains the factory catalytic converters and NPP valve actuators, so you keep GM’s quiet, tour, sport, and track modes with no tune and no check-engine light.

Best Value Cat-Backs: Borla, aFe & MBRP

If titanium is out of budget, a stainless cat-back delivers more volume per dollar. Borla’s S-Type is the popular middle ground—aggressive but livable—while the ATAK is the loudest option Borla builds. aFe’s MACH Force-Xp steps the piping down from 3 in to 2.5 in for a deep, refined tone, and the MBRP T304 system is our value champion at $1,469.99 with quad carbon-fiber tips.

How to Install a C8 Corvette Exhaust: Step by Step

Installing a C8 Corvette slip-on or cat-back exhaust is a direct bolt-on job that takes under two hours with hand tools and no ECU remap. The car’s rear-mounted engine puts the exhaust at the very back of the vehicle, so the entire procedure is done from underneath. Below is the process we follow in our Tampa shop.

1. Let it cool and lift the car. A hot titanium or stainless system will burn you. Allow the exhaust to cool fully, then raise the rear on a lift or jack stands rated for the C8 and chock the front wheels.
2. Disconnect the NPP valve connectors. If your car has the factory performance exhaust, unplug the electronic valve actuator harnesses before removing anything so you can transfer them to the new system.
3. Support and unbolt the stock section. Support the muffler/tailpipe assembly with a jack or a helper, then loosen the band or flange clamps at the mid-pipe and free the rubber isolator hangers. Penetrating oil on the factory hardware saves stripped bolts.
4. Remove the factory exhaust. Slide the stock assembly off the hangers and out from under the car. Compare it side by side with the new system to confirm hanger and tip alignment before installing.
5. Hang the new exhaust loosely. Fit the new slip-on or cat-back onto the rubber isolators and start every clamp or flange bolt by hand. Leave everything loose so you can align the tips in the rear fascia.
6. Align the tips, then torque. Center the tailpipes evenly in the bumper cutouts, then tighten clamps and flange bolts to the manufacturer’s spec in a cross pattern. Uneven tips are the most common install complaint—take your time here.
7. Reconnect valves and test. Plug the NPP actuators back in, lower the car, and start the engine. Cycle through the drive modes to confirm the valves open and close, and check for leaks at every joint.

Because these systems retain the factory catalytic converters and valve hardware, no tune is required and there is no check-engine light. If you ever fit a valveless aftermarket system, plug-and-play NPP valve simulators prevent fault codes.

Do C8 Exhaust Upgrades Need a Tune or NPP Valves?

No, a bolt-on C8 Corvette exhaust does not require a tune when it retains the factory catalytic converters and NPP valves. The Akrapovic Slip-On Line and the Borla, aFe, and MBRP cat-backs listed here all reuse the OEM electronic valve actuators, so the LT2’s quiet, tour, sport, and track sound modes continue to function exactly as they did from the factory. You gain volume and weight savings without altering fueling or timing.

Pair the exhaust with a few supporting upgrades and you have a complete rear-of-car refresh. A Mishimoto baffled oil catch can keeps the LT2’s intake tract clean, while a KW V3 coilover kit dials in ride height and damping to match the sharper, lighter feel. Browse the full exhaust collection to compare tips and finishes.