Stepping up to a 3in twin layout, the Exhaust Systems Australia HOLDEN-COMMODORE-VT-VZ-V6-V8-SEDAN-TWIN-3-KIT is a twin 3in kit listed to fit the VT–VZ Commodore sedan in V6 and V8 form. It includes an X-pipe, Everflo mufflers and a tailpipe.
What does the 3in twin layout suit?
The headline here is bore and balance: a twin 3in run is the larger-pipe path, sized for a bigger or worked engine, and the X-pipe ties the two banks together to even out flow and tone. The Everflo mufflers and tailpipe finish the section. At 3in across a twin layout, it's aimed at the V8 and stronger V6 builds rather than a mild stock setup. Running 3in across two pipes is a clear step up in pipework over a single-pipe cat-back, so the routing, X-pipe and mufflers all have to be packaged to clear the floorpan — which is why it's supplied as a matched twin kit rather than assembled piecemeal.
What's the X-pipe for?
An X-pipe crosses the two pipes part-way down, letting the banks share pulses. On a twin system it balances the note and flow side to side, which is why it's included here rather than two fully separate pipes.
Does it fit my VT–VZ sedan?
It's listed to fit the VT through VZ Commodore sedan in V6 and V8 form. That's a wide span with detail changes, so confirm your exact model and engine with the workshop so the twin 3in routing matches your floorpan.
What does fitting involve at our Illawarra workshop?
Oak Flats Muffler Men supplies and fits twin systems like this across the Illawarra. We align the X-pipe, hang the Everflo mufflers and tailpipe on the hoist, and confirm the listing first. RRP is $790. This is a supplier part with a published RRP; if it isn't on the shelf we'll source it in, so flag your build early and we'll quote lead time 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 size is this kit?
It's a 3in twin kit — the larger-bore path, with an X-pipe, Everflo mufflers and a tailpipe.
Does it include an X-pipe?
Yes — an X-pipe is part of the kit to balance the twin banks. Confirm fitment for your VT–VZ with the workshop.
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.