Valvetronic Downpipes for Chevy Corvette C8 Stingray (20-26) / Z06 (23-26) EPA Compliant 400 Cell Catted

These federal EPA-compliant 400-cell catted downpipes open up the exhaust on your C8 Corvette without going catless. They reduce the restriction found in the factory catalytic converters, giving the Stingray or Z06 better exhaust flow, sharper throttle response and a louder V8 sound.

The 400-cell catalysts keep this setup from having the smell and harsh sound you normally get after removing the cats. Run them with the stock exhaust for a deeper and louder version of the factory sound, or pair them with an aftermarket exhaust when you want the car to get considerably louder.

Please Note: EPA compliant does not mean CARB legal or 50-state legal. These downpipes are for federally certified vehicles and cannot be sold for vehicles registered in California or other states that require CARB compliance.

Fitment Information

• 2020 Chevy Corvette C8 Stingray 6.2L LT2 V8
• 2021 Chevy Corvette C8 Stingray 6.2L LT2 V8
• 2022 Chevy Corvette C8 Stingray 6.2L LT2 V8
• 2023 Chevy Corvette C8 Stingray 6.2L LT2 V8
• 2024 Chevy Corvette C8 Stingray 6.2L LT2 V8
• 2025 Chevy Corvette C8 Stingray 6.2L LT2 V8
• 2026 Chevy Corvette C8 Stingray 6.2L LT2 V8
• 2023 Chevy Corvette C8 Z06 5.5L LT6 V8
• 2024 Chevy Corvette C8 Z06 5.5L LT6 V8
• 2025 Chevy Corvette C8 Z06 5.5L LT6 V8
• 2026 Chevy Corvette C8 Z06 5.5L LT6 V8

Fitment Notes

• Valvetronic lists the same downpipe set for the C8 Stingray and C8 Z06.
• Fits coupe and hardtop convertible models.
• Not listed for the Corvette E-Ray or ZR1.
• This set replaces the factory catalytic converter sections on both sides of the engine.
• Professional installation is recommended due to the location of the catalytic converters in the mid-engine C8 chassis.

Federal EPA Compliant

• Federal EPA-compliant 400-cell catalytic converters
• Designed for vehicles built and registered to Federal EPA emissions standards
• Keeps catalytic converters in place while providing more exhaust flow than the factory units
• Not CARB exempt and not legal for vehicles registered in California
• Not legal for vehicles registered in other states that require CARB-approved replacement catalytic converters
• These are not 50-state-legal downpipes
• Check your state and local emissions requirements before ordering

Specs & Features

• Complete pair of left and right catted downpipes
• 400-cell high-flow catalytic converter on each side
• Brushed T304 stainless steel construction
• Mandrel-bent tubing with smooth internal transitions
• Reduces exhaust restriction compared to the factory catalytic converters
• Helps improve throttle response, midrange torque and high-RPM pull
• Adds a deeper and louder exhaust note
• Precision TIG-welded construction
• High-temperature-resistant catalyst cores
• OEM-style oxygen sensor placement
• Direct bolt-on design using the factory mounting locations
• Compatible with the factory exhaust and compatible aftermarket exhaust systems
• Part number: CHEV.C8.FF.400C.BR

What to Expect From the Sound

• Factory Exhaust: A deeper and louder version of the factory V8 sound, especially under acceleration.
• Aftermarket Exhaust: A much bigger change in sound with sharper crackles and a stronger high-RPM exhaust note.
• C8 Z06: The 5.5L flat-plane-crank LT6 will have a sharper and higher-pitched sound than the 6.2L LT2 used in the Stingray.

Warranty

• Catalysts: 25,000-mile limited emissions and OBD-II compatibility warranty
• Catalytic converter shells and connecting pipes: Five-year or 50,000-mile limited warranty against defective welding and corrosion
• T304 stainless tubing and welds: Limited lifetime-of-ownership warranty against manufacturing defects and penetrating rust
• Warranty coverage applies to the original purchaser and is not transferable

Pairs Well With

• Corsa Carbon Fiber Intake for Corvette C8 Stingray – Add more intake sound and airflow to the LT2 while opening up the exhaust side with the 400-cell downpipes.
• Corsa Carbon Fiber Intake for Corvette C8 Z06 – Give the LT6 more intake sound and airflow with a true dual-path carbon fiber system made specifically for the Z06.
• AWE SwitchPath Exhaust for Corvette C8 Z06 – Pair the catted downpipes with a valved catback that retains the factory drive-mode controls and gives the LT6 a much stronger exhaust note.

About Valvetronic Designs

Valvetronic Designs makes exhaust parts for people who want more sound and better flow without turning every drive into a headache. These C8 downpipes can be used with the stock exhaust or paired with a compatible aftermarket system depending on how loud you want the car.