MBM122MF

Holden STATESMAN V8 IRS DUAL 2.5in C/MUFFLER

Holden STATESMAN V8 IRS DUAL 2.5in C/MUFFLER (SKU: MBM122MF) Engineered for selected vehicle applications.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $673.94 AUD
In stock at supplier
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Holden STATESMAN V8 IRS DUAL 2.5in C/MUFFLER product image

Part specs

SKU
MBM122MF
Supplier
MPI Automotive
Category
Mufflers and resonators
Stock status
In stock at supplier

The MPI Automotive MBM122MF is a 2.5in dual centre muffler listed to fit the IRS-equipped Holden Statesman V8. The 2.5in bore is the point of difference here — it's sized for the long-wheelbase Statesman's twin run, doing the centre drone control on a V8 luxury sedan.

Why does the IRS matter for fitment?

This muffler is listed specifically for the independent-rear-suspension Statesman V8. IRS changes the rear floorpan and how the exhaust routes around the diff and subframe compared with a live-axle car, so a muffler matched to the IRS body sits and clears correctly. Ordering the IRS-specific part avoids clearance problems at the rear of a long-wheelbase Statesman.

What does the 2.5in dual centre layout suit?

At 2.5in, with a muffler each side in the centre, this set keeps the system balanced and holds gas speed up through the middle for a settled V8 note. Centre placement means it does the main drone control before the rear of the exhaust finishes the sound — sensible for a Statesman, where owners want presence without intrusive cabin boom on the highway. It's chambered, quietening by reflection and absorption.

Will it suit my Statesman V8?

The MBM122MF is listed to fit the Holden Statesman V8 with IRS. It's a centre-section dual muffler, so it pairs with the rest of your system. Confirm your car has IRS and check your current pipe sizing with the workshop before ordering, since the rear layout differs between body types.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men fits centre mufflers like this in-house across the Illawarra. We confirm the IRS routing, level the dual units under the floor, and seal the joints. RRP is $673.94; bring the Statesman in and we'll verify the IRS fit before booking 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 the MBM122MF?
It's a 2.5in dual centre muffler as published by the supplier, sized for the Statesman V8's twin run.
Does it only fit IRS cars?
It's listed for the IRS-equipped Holden Statesman V8 — the independent rear changes the floorpan and exhaust routing. Confirm your car has IRS with the workshop before ordering.
Is it a centre or rear muffler?
It's a dual centre muffler — it sits mid-system and does the main drone control before the rear of the exhaust finishes the note.

Fitment support across the Illawarra

Fitment checks near you across 18 Illawarra suburbs, from Oak Flats and Shellharbour to Wollongong and Kiama.
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Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.