Downpipes

Downpipes: the first pipe off the turbo, where flow either happens or it doesn't

Downpipes are the section of exhaust that bolts to the turbo outlet (or the header collector on some V8s) and carries spent gas down to the rest of the system. On a turbo car the downpipe is the biggest single restriction after the turbine, so opening it up lets the turbo spool and breathe more freely. A downpipe usually houses the front catalytic converter too, which is why they come as catted or race versions. Fit one when you want less backpressure and cleaner tuning headroom, and expect it to work alongside a tune to be worth the labor.

What ThreePiece stocks

There are 63 downpipes in this category right now, from 13 brands. The biggest lineups are Invidia (15), Diamond Eye Performance (9) and Wehrli (7), with AWE Tuning, aFe, Turbo XS, AMS, Stainless Works, Magnaflow, Kooks Headers, BBK, HKS and JBA filling out the rest. Prices run from $153 to $3,485, which is the current range for what's in stock, not a fixed promise. The spread reflects the difference between a single-outlet turbo pipe and multi-pipe catted connection sets like the Kooks Corvette C8 catted connection pipes.

Of these, 60 carry fitment data covering years 1987 to 2024. Top vehicles include the Subaru WRX, Ford F-150, Toyota Tacoma, Chevrolet Silverado, Ford Focus, Audi S5, Chevrolet Camaro, Toyota Supra and Subaru BRZ, across makes like Ford, Subaru, Audi, Chevrolet, Dodge, Jeep, Toyota, Mitsubishi and Honda.

How to choose

The main decision is catted versus race. Catted downpipes like the AMS Supra A90 street downpipe with GESI cat or the Stainless Works Taurus SHO high-flow cats keep a converter in the system; race pipes delete it for maximum flow. Second is single versus multi-pipe: trucks and turbo V6s like the AMS Raptor 3.5L Ecoboost street downpipes use paired pipes, while V8s often run catted connection sets such as the Kooks Camaro SS OEM high-flow catted connections. Third is fit style: some bolt to the factory system, others expect a matching aftermarket back half. Match the pipe diameter to what the rest of your exhaust and tune expect.

What else you need

A downpipe rarely goes in alone. Pair it with Headers on naturally aspirated V8s, or feed it into Cat-Back Exhaust and Cat-Back Systems for the back half. You may also need connecting Exhaust Pipes, a fresh Catalytic Converter, or bolt-up Exhaust Flanges. Browse the full Exhaust section to see how the pieces line up.

Fitment and ordering

Confirm your year, make and model before you buy. For help matching a downpipe to your car, call fitment support at 813-535-5801 or reach us through contact us. All orders ship free, and Affirm and Katapult financing is available through our financing options.

Downpipes: the first pipe off the turbo, where flow either happens or it doesn't

Downpipes are the section of exhaust that bolts to the turbo outlet (or the header collector on some V8s) and carries spent gas down to the rest of the system. On a turbo car the downpipe is the biggest single restriction after the turbine, so opening it up lets the turbo spool and breathe more freely. A downpipe usually houses the front catalytic converter too, which is why they come as catted or race versions. Fit one when you want less backpressure and cleaner tuning headroom, and expect it to work alongside a tune to be worth the labor.

What ThreePiece stocks

There are 63 downpipes in this category right now, from 13 brands. The biggest lineups are Invidia (15), Diamond Eye Performance (9) and Wehrli (7), with AWE Tuning, aFe, Turbo XS, AMS, Stainless Works, Magnaflow, Kooks Headers, BBK, HKS and JBA filling out the rest. Prices run from $153 to $3,485, which is the current range for what's in stock, not a fixed promise. The spread reflects the difference between a single-outlet turbo pipe and multi-pipe catted connection sets like the Kooks Corvette C8 catted connection pipes.

Of these, 60 carry fitment data covering years 1987 to 2024. Top vehicles include the Subaru WRX, Ford F-150, Toyota Tacoma, Chevrolet Silverado, Ford Focus, Audi S5, Chevrolet Camaro, Toyota Supra and Subaru BRZ, across makes like Ford, Subaru, Audi, Chevrolet, Dodge, Jeep, Toyota, Mitsubishi and Honda.

How to choose

The main decision is catted versus race. Catted downpipes like the AMS Supra A90 street downpipe with GESI cat or the Stainless Works Taurus SHO high-flow cats keep a converter in the system; race pipes delete it for maximum flow. Second is single versus multi-pipe: trucks and turbo V6s like the AMS Raptor 3.5L Ecoboost street downpipes use paired pipes, while V8s often run catted connection sets such as the Kooks Camaro SS OEM high-flow catted connections. Third is fit style: some bolt to the factory system, others expect a matching aftermarket back half. Match the pipe diameter to what the rest of your exhaust and tune expect.

What else you need

A downpipe rarely goes in alone. Pair it with Headers on naturally aspirated V8s, or feed it into Cat-Back Exhaust and Cat-Back Systems for the back half. You may also need connecting Exhaust Pipes, a fresh Catalytic Converter, or bolt-up Exhaust Flanges. Browse the full Exhaust section to see how the pieces line up.

Fitment and ordering

Confirm your year, make and model before you buy. For help matching a downpipe to your car, call fitment support at 813-535-5801 or reach us through contact us. All orders ship free, and Affirm and Katapult financing is available through our financing options.