A DPF-back exhaust system replaces everything from the outlet of your factory diesel particulate filter through to the tailpipe, while leaving the DPF itself completely untouched. It's the most common exhaust upgrade path for modern turbo-diesel utes and wagons, because it improves flow and sound without affecting the emissions equipment your vehicle needs to stay compliant. We stock DPF-back systems for popular diesel platforms including the Hilux, Ranger, D-Max and BT-50, built with mandrel-bent stainless steel for long-term durability.

What does DPF-back mean on an exhaust system?

DPF-back means the exhaust system starts at the outlet of your factory diesel particulate filter and replaces everything from that point back to the tailpipe, while the DPF itself remains in place and functioning as designed.

Is a DPF-back exhaust legal in Australia?

Yes, because the DPF and any catalytic converter remain fitted and functioning, a DPF-back system is generally the street-legal exhaust upgrade path for diesel vehicles, subject to your state's exhaust noise limits.

Will a DPF-back exhaust improve fuel economy or power?

Most owners notice an improvement in exhaust tone and, on some vehicles, a modest gain in flow and turbo response. Because the restrictive DPF stays in place, gains are typically smaller than a full turbo-back system.

Can I fit a DPF-back exhaust to a vehicle without a factory DPF?

No – DPF-back systems are designed to bolt onto the factory DPF outlet flange, so they're specific to vehicles that have a factory-fitted DPF. If your ute doesn't have one, a cat-back or turbo-back system is the relevant option instead.