Torqit 3.5" DPF Back Exhaust — 300 Series Landcruiser
- Fits Toyota 300 Series Landcruiser 3.3L Twin Turbo — June 2021 onwards
- 304 grade stainless steel — mandrel bent pipe, up to 2mm thick
- 3.5" diameter with 4" tip — increased flow, lower EGTs, better efficiency
- Two stainless steel resonators — deep, subtle exhaust note with no cabin drone
- Bolts on behind the DPF — DPF-back design keeps your factory warranty intact
- DIY bolt-together install — approximately 1 hour on the driveway, no hoist needed
- Fits with spare tyre — no clearance issues
- 10-year product warranty — made to order, allow up to 7 days dispatch
If you're running a 300 Series Landcruiser and want more performance without touching the DPF, this is the exhaust upgrade you've been looking for. The Torqit 3.5" DPF Back Exhaust for the 300 Series Landcruiser is a full single-exit stainless steel system designed to bolt straight onto the back of your factory DPF — improving exhaust flow, dropping EGTs, and delivering a deep exhaust note without any cabin drone.
Built from 304 grade stainless steel with mandrel bent pipe and brushed stainless finish up to 2mm thick, this isn't a budget system. Heavy-duty wrap-around bracketry and three-bolt laser-cut flanges — TIG welded inside and out — make for a solid, rattle-free install that'll outlast the vehicle. The 3.5" pipe steps up to a 4" tip, giving the rear end a clean, purposeful look to match the performance gains.
The two stainless steel resonators do the heavy lifting on sound — you get a deep, satisfying exhaust note at idle and under load, without the irritating cabin drone that plagues cheaper single-resonator systems. If you spend long hours on the highway between stations or on extended touring trips, you'll appreciate the difference.
The big question most 300 Series owners ask: will this void my warranty? Short answer — no. Because this system bolts onto the back of the factory DPF, your diesel particulate filter remains completely intact. The system is DPF-back compliant, which means it sits in the legally permissible modification zone and doesn't interfere with your emissions equipment. Your Toyota dealer warranty remains valid. The kit comes in four sections and fits with the spare tyre — no modifications required.
Install is genuinely DIY-friendly. Four bolt-together sections, basic socket set, and you're done in around an hour flat on the driveway — no hoist required. Torqit back this with a 10-year product warranty. Made to order — allow up to 7 days for dispatch.
Quick Spec Summary
fitment, performance & install info
Fitment
- Toyota 300 Series Landcruiser
- 3.3L Twin Turbo Diesel (V6)
- June 2021 onwards
- Single exit, DPF-back
Performance
- 3.5" pipe diameter
- 4" stainless tip
- Two stainless resonators — no cabin drone
- Lower EGTs, improved efficiency
Install
- ~1 hour on the driveway
- No hoist required
- 4-piece bolt-together kit
- Made to order — allow up to 7 days dispatch
DPF-Back Explained Performance, legality & warranty info
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Why DPF-Back?
The 300 Series Landcruiser runs a diesel particulate filter (DPF) as part of its factory emissions system. A full exhaust upgrade that removes or bypasses the DPF is not road-legal in Australia for on-highway use — and will void your Toyota warranty.
A DPF-back exhaust solves this by only replacing the section of exhaust pipe behind the DPF. Your factory filter stays in place, your emissions equipment remains untouched, and your dealer warranty remains valid.
It's the correct approach for 300 Series owners who want real performance gains without the compliance headache. The Torqit system bolts directly to the back of your factory DPF using three-bolt flanges — no cutting, no welding, no drama.
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What You Gain
- Increased exhaust flow through 3.5" mandrel bent 304 stainless pipe
- Lower exhaust gas temperatures (EGTs) — particularly noticeable when towing or loaded up
- Improved engine efficiency — small gains visible on long highway runs
- Deep exhaust note without cabin drone — dual resonator tuning
- Factory warranty protection — DPF-back design keeps your dealer warranty intact
- 10-year product warranty from Torqit
Not sure if this suits your build? Contact us before ordering.
Frequently Asked Questions
Common questions about the Torqit DPF Back Exhaust for 300 Series Landcruiser
Will this exhaust void my Landcruiser warranty?
No. Because this system bolts onto the back of your factory diesel particulate filter (DPF), your DPF and all emissions equipment remain completely untouched. Your Toyota new vehicle warranty stays valid.
If a dealer attempts to void your warranty based on a DPF-back exhaust, they need to demonstrate that the exhaust caused the specific fault — which, for a properly installed system of this quality, they won't be able to do. When in doubt, ask your dealer in writing before fitment.
Is a DPF-back exhaust legal for a 300 Series Landcruiser?
Yes. A DPF-back exhaust leaves the factory DPF and all emissions control equipment in place — it only replaces the pipe and muffler section behind it. This is the legally compliant approach to exhaust upgrades in Australia.
Full exhaust systems that remove or bypass the DPF are a different story — they're generally not road legal for on-highway use. If you want performance gains without the compliance headache, DPF-back is the correct choice for the 300 Series.
How long does installation take?
Around one hour on a flat driveway. The Torqit system comes in four bolt-together sections with three-bolt flanges — no welding, no hoist, no specialist tools required. You'll need a basic socket set and ideally a second set of hands to hold the pipe in position while you tighten up.
Torqit's heavy-duty bracketry makes lining everything up straightforward. If you've done basic mechanical work before, this is comfortably within DIY territory.
What diameter is this exhaust?
The pipe runs at 3.5 inches (89mm) diameter throughout, stepping up to a 4-inch tip at the exit.
Stepping up from the factory exhaust diameter increases exhaust gas flow — which is what delivers the EGT reduction and the efficiency improvements you'll see on long runs, particularly when towing or loaded.
What's the sound like — is there cabin drone?
Deep and subtle — not loud, not aggressive. The two stainless steel resonators in this system are tuned to give the V6 twin turbo a noticeable, satisfying exhaust note without the cabin drone that ruins long-distance driving in cheaper single-resonator setups.
If you're doing regular highway kilometres, you won't find this exhaust fatiguing. Under acceleration it has genuine presence; at cruise it quietens right down.
Does this exhaust fit with the spare tyre?
Yes. The system has been designed to work around the 300 Series' spare tyre — no clearance issues, no modifications required. This is a common concern with aftermarket exhausts on the LC300 and Torqit have engineered around it.
How long is delivery — when will I receive it?
This exhaust is made to order — allow up to 7 business days for dispatch. Once dispatched, delivery times depend on your location.
If you're working to a deadline — a specific trip, a service date, or a fitment appointment — contact us before ordering and we'll confirm current lead times.
What's included in the kit?
The Torqit DPF Back Exhaust kit includes four pipe sections that bolt together to form the complete system — over axle pipe, mid section, resonators, and the 4" tip. All flanges, brackets, and hardware are included.
Nothing else required — this is a complete bolt-on kit. The over-axle pipe design makes the install easier than comparable systems.