MKHN0139

VZ HSV V8 Sedan 2.5in Dual Catback Muffler

VZ HSV V8 Sedan 2.5in Dual Catback Muffler/Muffler.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $1323.30 AUD
In stock at supplier
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VZ HSV V8 Sedan 2.5in Dual Catback Muffler/Muffler product image

Part specs

SKU
MKHN0139
Supplier
MPI Automotive
Category
Mufflers and resonators
Vehicle fitment
Holden
Stock status
In stock at supplier

The MPI Automotive MKHN0139 is a 2.5in dual cat-back with twin mufflers per side for the VZ HSV V8 sedan. Two boxes in each line on the tighter bore make it the most subdued of the dual layouts for the VZ.

What does the twin-muffler dual layout do?

Each pipe carries a muffler-into-muffler run — two silencing stages — and the system splits left and right as a dual. That sends the V8's pulses through twice the absorption and reflection of a single box on each side, which is why the MKHN0139 is the quietest of the dual options for the VZ sedan. We won't quote a number; a comparable twin-muffler fit is the honest gauge.

Why the 2.5in bore?

Two-and-a-half inches is the tighter pipe, holding gas speed up for low-down and mid-range response on a street V8 rather than chasing top-end flow. Run as a dual with twin mufflers, it pairs twin exits with a measured note and near-stock pipe size. It stays a cat-back, so the catalytic converter and front pipework are retained as the factory fitted them.

Will it fit my VZ HSV sedan?

It's listed to fit the VZ HSV V8 sedan. The dual routing and hanger spacing are particular to that body; confirm your exact build with the workshop before ordering, since the VZ HSV range ran several variants.

How do we fit it in the Illawarra?

Oak Flats Muffler Men supplies and fits the MKHN0139 in-house across the Illawarra. We hang both pipes and all four mufflers on the car's mounts, check clearance to the floor and rear valance on each side, and join every stage 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

How many mufflers does the MKHN0139 run?
Two per side across a dual layout — four in total — making it the most subdued of the VZ dual options.
What bore is it?
It's 2.5in per pipe, holding gas speed up for low-down and mid-range response.
Does it keep the catalytic converter?
Yes — as a cat-back, the factory converter and front pipework 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.
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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.