Quick picks: if you just want the short answer, here's where most Australian owners land. Best all-rounder for a diesel 4x4 ute: a 3-inch DPF-back system. Best for towing and touring: the same, in 409 stainless. Best for a heavily modified or big single-turbo diesel: a 3-inch (or 3.5/4-inch) turbo-back. Best for a street-driven V6/V8 sedan or ute: a 2.5-inch cat-back. Best budget upgrade across the board: swapping in a set of exhaust tips or a high-flow catalytic converter. Read on for the detail by vehicle and by use case.
How we're picking "best" here
"Best" means different things depending on what you're driving and why, so we're judging every system in this guide against the same four things: does it actually flow better than what came off the factory line, is it mandrel-bent rather than crush-bent so it doesn't neck down at every corner, is the material right for how the vehicle is used (409/304 stainless for anything that sees water, mud or salt), and does it keep you road-legal by retaining your catalytic converter and DPF where required. Everything below is built in-house at DEA Performance to that standard, not resold from someone else's tooling.
Best aftermarket exhaust by vehicle
Fitment is everything with an exhaust — the "best" system for your engine and cab configuration is rarely a universal part. Here's where to start for the utes and cars we get asked about most.
Toyota Hilux
Across the N70 and N80 range, most owners land on a 3-inch system — turbo-back on the older N70 3.0L D4D, DPF-back on the N80 to keep the factory DPF in place. Browse the full Hilux exhaust range, or go straight to the two most popular fits: the Hilux N70 3-inch turbo-back and the Hilux N80 3-inch DPF-back. Wanting something quieter for daily driving? A DPF-back with a straight-through muffler keeps things civil; ask our team if you want a specific decibel target and we'll point you to the right muffler in the range.
Toyota LandCruiser (60/76/78/79/80/105/200 Series)
The LandCruiser range covers more different engines and chassis than any other model we build for, so fitment detail matters more here than anywhere else. Browse the full LandCruiser exhaust range, or jump straight to the most-searched variants: 79 Series VDJ79R V8 3-inch DPF-back, 200 Series V8 wagon 3-inch turbo-back, and the older 80 Series 4.2L 1HD 3-inch turbo-back. Not sure your exact model and engine matches a listing? Check the range first — we build to chassis code and engine, not just model year, because a 79 Series exhaust that fits one variant won't necessarily bolt straight onto another.
Nissan Patrol (GQ/GU/Y62)
The GU (Y61) TD42 and ZD30 are two of our most popular diesel platforms, and the Y62 petrol wagon is a common ask for a deeper, more aggressive note. Browse the Patrol exhaust range, or go straight to the Y62 Patrol 3-inch stainless exhaust or an older GQ TD42 3-inch turbo-back conversion if you're running a classic wagon. If you want the loudest street-legal option on a GU, ask us about pairing a turbo-back with a straight-through muffler rather than going full straight-pipe.
Ford Ranger
Both the PX and the Next-Gen Ranger are DPF-equipped from the factory, so DPF-back is the straightforward, road-legal upgrade for the vast majority of owners. Browse the Ranger exhaust range, including the Ranger PX 3.2L 3-inch DPF-back and the Next-Gen 2.0L Bi-Turbo 3-inch DPF-back.
Mitsubishi Triton, Isuzu D-Max, Mazda BT-50, Holden Colorado and Nissan Navara
These five round out the rest of the ute-based 4x4 market, and the same rule of thumb applies across all of them: 3-inch DPF-back for most late-model diesels, stepping up to turbo-back if you're chasing maximum flow and you're comfortable with the extra work involved in keeping it compliant. Browse each range directly: Triton, D-Max, BT-50, Colorado and Navara, including the Navara NP300 2.3L 3-inch DPF-back.
Holden Commodore and Ford Falcon
For the classic Aussie V6/V8 sedans and utes, 2.5-inch cat-back remains the sweet spot for a street car — enough flow gain and a noticeably deeper note without the drone that can come with jumping straight to 3-inch. Browse the Commodore range and Falcon range, including the Commodore VT-VY V6 2.5-inch cat-back. If you're deciding between cat-back and turbo-back for a petrol car, our cat-back vs turbo-back comparison walks through the trade-offs, and our 2.5-inch vs 3-inch guide covers which diameter actually suits your engine.
Best aftermarket exhaust by what you're actually trying to achieve
Best exhaust for towing
For anything towed or heavily loaded, the goal is lower exhaust gas temperatures under sustained load, not outright noise. A 3-inch DPF-back in 409 stainless is the standard pick for a tow rig, and it's worth reading how this plays out in practice in Will a 3-Inch Exhaust Cause Boost or Fault-Code Problems on Your Diesel 4×4? before you buy.
Best exhaust for diesel performance and turbo response
On a turbo-diesel, the exhaust's real job is freeing up EGT headroom so a tune can safely add fuelling — the exhaust itself isn't where the power comes from, it's what lets you get there without cooking the motor. A turbo-back system gives the biggest gain here; for a heavily-built or big single-turbo diesel, that's also where 3.5 and 4-inch pipework starts to make sense. Our exhaust diameter guide covers exactly how this works and when to step up in size.
Quietest option
If you want the upgrade without the attention, a DPF-back or cat-back with a straight-through muffler retained gives you better flow with only a modest change in note — this is what most owners asking for a "quiet Hilux exhaust" actually end up choosing.
Loudest street-legal option
For maximum note without crossing into straight-pipe territory, a turbo-back system with a resonator deleted (muffler retained) is the usual answer — see our resonator vs muffler breakdown for how much of the sound actually comes from each component. A true straight-pipe exhaust is the loudest option we build, but check your state's noise and modification rules before going this route.
Best 3-inch turbo-back systems
For the 4x4 owners specifically chasing the biggest flow gain, our 3-inch turbo-back range replaces everything from the turbo outlet back. It's the most involved upgrade on this list and the one most likely to need a tune alongside it, so it's worth reading our cat-back vs turbo-back and catback exhaust guide articles first if you're weighing it up against a simpler DPF-back or cat-back.
Why DEA Performance
Every system in this guide is designed and built by us in Australia, mandrel-bent (never crush-bent), and available in aluminised or 409/304 stainless depending on how you use the vehicle. Because we're the manufacturer, not a reseller, we can tell you exactly what a given system will and won't do for your specific engine and chassis code — and your warranty comes straight from the people who built it.
Frequently asked questions
What's the best aftermarket exhaust for a Hilux in Australia?
For most N70 and N80 Hilux owners, a 3-inch turbo-back (N70) or DPF-back (N80) is the standard upgrade. Browse the full Hilux range to match your exact model and engine.
What's the best exhaust for towing?
A 3-inch DPF-back system in 409 stainless, for the EGT and durability benefits under sustained load. See our DPF-back range.
What's the best 3-inch turbo-back exhaust?
The right one is the one built for your exact engine and chassis code — turbo-back systems vary significantly by vehicle. Browse our turbo-back range by vehicle rather than buying on diameter alone.
Is a straight-pipe exhaust the best option?
Only if outright sound and flow are your only priorities — a true straight-pipe removes the catalytic converter and muffler entirely, which is rarely road-legal. Most owners get what they actually want (flow and a deeper note) from a turbo-back or DPF-back instead. See our straight-pipe range if you're building an off-road-only or race vehicle.
What's the best 4x4 exhaust brand in Australia?
Look for a manufacturer that builds in-house (not just resells), uses mandrel bends throughout, and offers a material suited to how you use the vehicle. We build every system we sell to that standard — browse our full 4x4 exhaust range or performance exhaust range to see the difference for yourself.
Shop exhaust parts by category
Building or repairing a system section by section rather than buying a complete kit? Shop catalytic converters and high-flow cats, headers and extractors, exhaust tips and dual exhaust tips, pipes and tubes, hangers and mounts, and diesel particulate filters — or browse the complete exhaust parts range if you're not sure exactly what you need yet.
Still not sure which system is right for your vehicle? Get in touch with our team and we'll match the exhaust to your engine, your driving and your budget — not the other way around.