A 2.5in bore is the headline here — a step up from the smaller systems for this platform: the HOLDEN-STATESMAN-AND-CAPRICE-VS-V6-IRS-2-5-INCH-CATBACK-SYSTEM-WITH-REAR-MUFFLER from Exhaust Systems Australia is a 2.5in cat-back with a rear muffler, listed for the VS Statesman and Caprice V6 on the IRS rear.
What does the 2.5in bore suit?
The 2.5in pipe is the defining spec — a larger bore than the entry systems, flowing more for a V6 owner who wants a fuller exhaust on the long-wheelbase Statesman and Caprice. It's a cat-back, replacing the system from behind the catalytic converter back to the tail, and it finishes through a single rear muffler that does the silencing. The bigger bore matches a V6 that's been opened up a little rather than left bone stock.
How does the rear muffler shape the note?
A muffler quietens by absorbing and reflecting sound inside its body, and as the rear box here it sets the tailpipe character on the long-wheelbase body. With a single rear muffler doing the work on a 2.5in system, the note is a touch freer than a multi-muffler layout. There's no published sound figure, so the honest test is to hear a comparable VS V6 fit before deciding.
Will it suit my VS Statesman or Caprice?
It's listed to fit the Holden Statesman and Caprice VS V6 with the independent rear end. Because the routing keys to the IRS layout and the long body, confirm your exact model and rear-end type with the workshop before ordering.
How do we fit it at our Illawarra workshop?
Oak Flats Muffler Men supplies and fits this 2.5in cat-back in-house across the Illawarra. We route the 2.5in pipe to clear the IRS cradle, mount the rear muffler and set the tail square. 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 bore is this system?
2.5in — a larger bore for a V6 owner wanting a fuller cat-back on the long-wheelbase body.
How many mufflers does it have?
One rear muffler, which sets the tailpipe note on this 2.5in system.
Does it keep the catalytic converter?
Yes — it's a cat-back, so it replaces the system from behind the converter back and leaves the emissions hardware in place.
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.