Unlike the single-box parts in this family, the Exhaust Systems Australia HOLDEN-COMMODORE-VS-V6-SEDAN-IRS-2-1-2-CATBACK-KIT-INC-EVERFLO-MUFFLER-AND-TAILPIPE is a complete cat-back kit on a 2in bore — it includes an Everflo muffler and the tailpipe to finish the back half of the VS V6 IRS sedan in one package.
What does the cat-back kit include?
This is a cat-back kit, meaning it replaces the system from the catalytic converter back rather than swapping a single box. Built on a 2in bore for the standard or lightly modified VS V6, it comes with an Everflo muffler and the tailpipe, so you get the rear silencing and the finished tail in one matched package. It's cut for the IRS (independent-rear) sedan, whose subframe routes the back of the system differently to the live-axle cars.
Is it road legal?
A cat-back leaves the catalytic converter and everything ahead of it untouched — it only replaces the section behind the cat — so it keeps the factory emissions hardware the VS left the showroom with in place. That makes it the compliance-friendly path compared with anything that removes the cat. Confirm your exact build and any state requirements with the workshop before fitting.
Will it suit my IRS VS sedan?
It's listed to fit the Holden Commodore VS V6 sedan with IRS. Because the live-axle cars route the rear differently, confirm with the workshop that yours is the IRS car before ordering, so the kit lines up to the subframe and hangers it's designed for.
How do we fit it in the Illawarra?
Oak Flats Muffler Men supplies and fits this cat-back kit in-house across the Illawarra. We join it to the cat-back flange, hang the Everflo muffler and tailpipe on the IRS sedan's mounts, and set the tail so it sits even at the bumper. Bring the car in and we'll confirm fitment and book the bay.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Common questions
What comes in the kit?
It's a cat-back kit on a 2in bore, including the Everflo muffler and the tailpipe to finish the rear of the system.
Does it keep the catalytic converter?
Yes — a cat-back replaces only the section behind the cat, so the factory converter stays in place.
Is it for the IRS car?
Yes — it's listed for the VS V6 IRS sedan. Confirm your rear end 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.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.