SSMBM120MF

Holden Commodore VP VR VS V8 IRS Sedan Dual 2 1/2in C/Muffler (Single Cat only)

Holden Commodore VP VR VS V8 IRS Sedan Dual 2 1/2in C/Muffler (Single Cat only) for selected vehicle applications.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $1200.79 AUD
In stock at supplier
Afterpay, Zip Pay & Zip Money available
Afterpay acceptedZip accepted — Zip Pay and Zip Money
Holden Commodore VP VR VS V8 IRS Sedan Dual 2 1/2in C/Muffler (Single Cat only) product image

Part specs

SKU
SSMBM120MF
Supplier
MPI Automotive
Category
Mufflers and resonators
Stock status
In stock at supplier

The MPI Automotive SSMBM120MF is a dual centre muffler for the VP-to-VS Holden Commodore V8 sedan with independent rear suspension and the single-cat layout. The IRS-and-single-cat specification is the point of difference — it matches the cars built with one catalytic converter and the IRS floorpan.

Why the IRS and single-cat-only spec matters

Across the VP-to-VS range, Commodores were built with different rear ends and cat arrangements, and the exhaust has to suit the one your car has. The SSMBM120MF is the dual centre muffler for the IRS sedan running a single catalytic converter, so it fits the floorpan and the cat layout those cars left the factory with. Getting the IRS-and-single-cat version is what keeps the dual centre path lining up with the rest of the system.

What does the dual centre muffler do?

Running two bodies through the centre keeps the V8's dual path intact through the middle of the car, where most of the cruise-speed resonance is taken out. Because this is the single-cat layout, the factory catalytic converter stays in place ahead of it. The supplier lists the body at a 2in bore. It is a like-for-like dual centre swap, leaving the front and rear in place.

Will it suit my Commodore sedan?

This muffler is listed to fit the VP, VR and VS Commodore V8 sedan with IRS and the single-cat layout. Rear-end and cat specification varied within the range, so confirm your exact build with the workshop before ordering — the IRS-and-single-cat detail has to match your car.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men fits this dual centre muffler in-house. We confirm the IRS-and-single-cat layout, check the joins on both banks, the hangers and the clearance to the rear cradle, then mount each body so the dual path sits even. Send your VIN or build details and we will 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 layout does the SSMBM120MF suit?
It is for the VP-to-VS Commodore V8 sedan with independent rear suspension and the single-catalytic-converter layout. Confirm your exact build with the workshop.
Does it keep my catalytic converter?
Yes. It is the single-cat layout, so the factory catalytic converter stays in place ahead of the dual centre section.
Is it one muffler or a pair?
It is a dual centre muffler — two bodies, matching the V8's twin centre path. The front and rear sections stay 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

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.