Best Exhaust for Toyota Landcruiser 300 Series
Share
Why Your Landcruiser 300 Series Deserves a Better Exhaust
If you've invested in a Toyota Landcruiser 300 Series you already know what you're driving one of the most capable, refined and competent touring 4x4s ever built. The 3.3L V6 twin turbo diesel under the bonnet is a genuinely impressive piece of engineering. But like most factory setups the exhaust system is a compromise. It's designed to meet noise regulations, emissions targets and cost constraints not to extract every last bit of performance from that engine.
That's where a quality aftermarket exhaust comes in. And if you're going to do it do it right.
What Is a DPF-Back Exhaust and Why Does It Matter?
A DPF-back exhaust replaces everything from the Diesel Particulate Filter (DPF) to the rear of the vehicle. It leaves the DPF itself untouched which means your 300 Series stays emissions compliant and road legal across Australia. You're simply replacing the most restrictive section of the factory exhaust with a larger freer-flowing system.
This is the most popular and practical exhaust upgrade for the 300 Series it delivers real performance gains without touching the emissions hardware that keeps your vehicle legal and your warranty intact.
The Outback Exhausts System for the Landcruiser 300 Series
Outback Exhausts' build one system for the 300 Series, and we build it properly. Our 3.5" DPF-Back Exhaust for the Toyota Landcruiser 300 Series FJA300R is engineered and manufactured right here in Australia specifically for the 3.3L V6 twin turbo diesel (July 2021 onwards).
It comes in two variants to suit how you drive:
- Resonator (Medium Note) — $1,605: A deep refined exhaust tone that suits the premium character of the 300. Noticeably better than stock without being antisocial on long highway runs. This is the one most touring families choose.
- Pipe Only (Loud Note) — $1,495: For those who want maximum flow and a more aggressive sound. Popular with serious off-road tourers who spend more time on dirt than bitumen.
Both variants are available in our Toyota Landcruiser 300 Series Exhaust Systems collection.
Specifications at a Glance
| Spec | Detail |
|---|---|
| Diameter | 3.5 inches (89mm) |
| Material | 409 Premium Stainless Steel |
| Construction | Mandrel bent |
| Configuration | DPF-back with resonator (or pipe only) |
| Weight | 23kg |
| Fitment | Bolt-on, no cutting or welding |
| Warranty | 5 years |
| SKU | OE4712-S35-RES / OE4712-S35 |
| Compatible Vehicle | Toyota Landcruiser 300 Series Wagon FJA300R, 3.3L V6 Twin Turbo Diesel, July 2021 onwards |
What Performance Gains Can You Actually Expect?
We're not going to throw around wild horsepower numbers that's not how we operate. What Outback Exhausts' can tell you is what our customers consistently report after fitting the 3.5" DPF-back:
- Improved throttle response — the engine feels more immediate, especially when pulling away from low speeds or overtaking on the highway
- Better mid-range torque delivery — the V6 twin turbo has plenty of torque on tap reducing exhaust restriction lets it breathe more freely through the rev range
- Fuel economy improvements of 5–10% — not guaranteed but commonly reported particularly on long touring runs at highway speeds
- A deeper more refined exhaust note — the 300 Series is a premium vehicle; it deserves a sound to match
The 3.5" diameter is a deliberate engineering choice. The factory exhaust on the 300 Series is undersized relative to the flow demands of the 3.3L V6 twin turbo. Stepping up to 3.5" mandrel-bent piping significantly reduces back pressure and lets the engine do what it was designed to do.
Resonator or Pipe Only — Which Should You Choose?
This comes down to how you use your 300 Series and who's in the car with you.
If you're a family tourer long highway stretches, kids in the back, camping trips across the country the resonated version is the right call. It gives you a noticeably better sound than stock without the drone that can make long drives exhausting.
If you're a dedicated off-road tourer who spends more time on corrugated dirt roads than sealed highways and you want maximum exhaust flow with a more aggressive note the pipe-only version delivers that. It's louder, it's freer-flowing and it suits a more serious off-road build.
Either way both are bolt-on fitments no cutting no welding no drama.
Is a DPF-Back Exhaust Legal in Australia?
Yes. A DPF-back exhaust leaves the Diesel Particulate Filter completely intact. You're not removing or modifying any emissions control equipment you're simply replacing the exhaust piping downstream of the DPF. This keeps your 300 Series compliant with Australian Design Rules (ADRs) and road-legal in every state and territory.
If you're ever unsure, check with your local transport authority or a licensed vehicle inspector. But for a straight DPF-back replacement like ours you're in the clear.
How Hard Is It to Install?
Outback Exhausts' 300 Series exhaust is a complete bolt-on replacement system. No cutting no welding no fabrication required. Most customers with basic mechanical skills and a decent set of tools can have it fitted in 2–3 hours. The system is designed to bolt directly onto the factory mounting points from the DPF rearward.
If you'd prefer to have it professionally installed any exhaust shop or 4x4 specialist can handle it without issue. We recommend professional installation for the best result and to ensure the warranty remains valid.
Why Australian Made Matters
There's a reason Outback Exhausts manufacture here in Australia rather than importing. Our exhaust systems are built for Australian conditions coastal salt spray, red dust, river crossings, extreme heat, and the kind of corrugated outback tracks that shake lesser products apart. We use 409 premium stainless steel and mandrel bending technology because we know what these vehicles go through.
When you buy an Outback Exhausts system you're not getting a generic import that's been relabeled. You're getting a system that was designed, engineered and built specifically for your vehicle and the conditions you drive in. That's why we can back it with a 5-year warranty and mean it.
Frequently Asked Questions
Will this exhaust fit my Landcruiser 300 Series?
Our system is specifically designed for the Toyota Landcruiser 300 Series Wagon (FJA300R) with the 3.3L V6 twin turbo diesel engine, built from July 2021 onwards. If you're unsure about your specific build date or variant, check our 300 Series collection page or contact us directly.
Do you ship Australia-wide?
Yes. We ship nationwide. Metro areas typically receive orders within 3–7 business days. Remote locations may take a little longer. You'll receive tracking information once your order is dispatched.
Do you ship internationally?
Yes, we ship to international destinations. International customers are responsible for any customs duties, taxes or import fees. Contact us for a specific shipping quote before ordering.
What does the 5-year warranty cover?
Our warranty covers manufacturing defects, material failure and weld integrity under normal use. It does not cover damage from accidents, improper installation, modifications or extreme abuse. It's a genuine warranty not fine print designed to avoid paying out.
Will the exhaust rust?
409 stainless steel provides excellent corrosion resistance for Australian conditions. You may see some surface discolouration over time particularly in coastal or high humidity environments but it will not rust through like mild steel. That's the whole point of using quality stainless.
Can I get a louder or quieter sound than what's listed?
Our two variants resonated (medium note) and pipe only (loud note) cover the range of what most 300 Series owners are looking for. If you have a specific requirement, get in touch and we'll talk through your options.
Ready to Upgrade?
If you're ready to get more out of your Landcruiser 300 Series, start with the exhaust. It's one of the most cost-effective performance upgrades you can make and when it's done right with Australian-made stainless steel and a proper 5-year warranty it's a modification you'll never regret.
