Is the SSMKNI0096 legal for road use in NSW?

No. It deletes the catalytic converter, so it is not ADR 79/04 compliant for road registration in NSW and is for off-road use only.

What's the difference between this and the with-cat version?

This SSMKNI0096 omits the catalytic converter; the with-cat turbo-back retains it for road compliance. Talk to the workshop about which suits your use.

Will it fit my NP300 Navara?

It's listed to fit the Nissan NP300 Navara as a 3in turbo-back with a rear muffler. Confirm your exact build with the workshop before ordering.

SSMKNI0096

Nissan NP300 Navara 3in Turbo Back Exhaust System Without Cat, Muffler

Nissan NP300 Navara 3in Turbo Back Exhaust System Without Cat, Muffler.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $2627.88 AUD

In stock at supplier

Request fitted quote Call the workshop

Afterpay, Zip Pay & Zip Money available

Nissan NP300 Navara 3in Turbo Back Exhaust System Without Cat, Muffler product image

Part specs

SKU: SSMKNI0096
Supplier: MPI Automotive
Category: Mufflers and resonators
Vehicle fitment: Nissan
Stock status: In stock at supplier

The MPI Automotive SSMKNI0096 is a 3in turbo-back system for the Nissan NP300 Navara that deletes the catalytic converter and runs a rear muffler. Leaving the cat out is the defining trait — and the one with consequences, because a cat-delete on the diesel Navara's exhaust is not ADR 79/04 compliant for road registration in NSW and is for off-road use only.

What does a turbo-back without cat involve?

A turbo-back system replaces the exhaust from the turbo outlet rearward — a longer span than a cat-back and the section where a 3in bore opens up flow on a diesel like the NP300. This version omits the catalytic converter and finishes through a rear muffler to keep the note in check. Removing the cat is exactly why it sits outside road compliance, so it's intended for closed-course or off-road applications, not a registered vehicle on NSW roads.

Is it road legal?

No. Because the SSMKNI0096 deletes the catalytic converter on a road-relevant turbo-back system, it is not ADR 79/04 compliant for road registration in NSW. It's an off-road-only part. We won't soften that: if your Navara is registered and driven on the road, this is not the system for it, and we'll talk you through the with-cat alternative instead.

Why choose the 3in bore and rear muffler?

The 3in diameter suits the Navara's diesel output where a freer-flowing turbo-back is wanted, and the rear muffler keeps volume civil rather than running open. For off-road and competition use, deleting the cat removes that restriction entirely — the trade-off being the legality point above. Sound character follows from the muffler and open-cat layout; we don't publish any decibel figure.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men supplies and fits turbo-back systems in-house across the Illawarra. For this off-road-only build we confirm intended use up front, then set the 3in run and rear muffler clearances on your NP300. It's listed to fit the Nissan NP300 Navara; send your exact build and we'll confirm before booking.

Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.

Common questions

Is the SSMKNI0096 legal for road use in NSW?: No. It deletes the catalytic converter, so it is not ADR 79/04 compliant for road registration in NSW and is for off-road use only.
What's the difference between this and the with-cat version?: This SSMKNI0096 omits the catalytic converter; the with-cat turbo-back retains it for road compliance. Talk to the workshop about which suits your use.
Will it fit my NP300 Navara?: It's listed to fit the Nissan NP300 Navara as a 3in turbo-back with a rear muffler. Confirm your exact build with the workshop before ordering.

Fitment support across the Illawarra

Fitment checks near you across 18 Illawarra suburbs, from Oak Flats and Shellharbour to Wollongong and Kiama.Show nearby fitment areasCollapse section

Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.

Book the right exhaust job without guessing.

Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.

Unit 2/8 Shaban St, Albion Park Rail NSW 2527 02 4256 3740 sales@mufflermen.com.au Send vehicle details