SSMKHN0305

Holden WK WL Statesman V8 3in Dual With 1 7/8 in Extractors Muffler

Holden WK WL Statesman V8 3in Dual With 1 7/8 in Extractors Muffler/Muffler.

BrandMantaMPI Automotive

Category: Extractors and headers

RRP $5725.40 AUD
In stock at supplier
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Holden WK WL Statesman V8 3in Dual With 1 7/8 in Extractors Muffler/Muffler product image

Part specs

SKU
SSMKHN0305
Supplier
MPI Automotive
Category
Extractors and headers
Vehicle fitment
Holden
Stock status
In stock at supplier

Big primaries, quiet finish — the MPI Automotive SSMKHN0305 runs 1⅞in extractors on a 3in dual muffler-to-muffler system, listed to fit the Holden WK and WL Statesman V8. It's listed at $5,725.40.

Why pair 1⅞in primaries with twin mufflers?

The SSMKHN0305 combines two deliberate choices: 1⅞in primary tubing and a muffler-to-muffler finish. The larger 1⅞in primaries let more gas flow before the runners merge, suiting a higher-rpm, higher-output V8 build, while the two muffler stages keep the result restrained. It's the build for a Statesman owner who wants the bigger-primary breathing but a settled note, not a loud one.

What the 3in dual layout does here

This is a 3in dual system — twin pipes, a bank each side for the V8 — routed under the long-wheelbase WK/WL Statesman. The dual layout gives each bank its own path and the bigger bore keeps the flow from the larger primaries moving, while the two mufflers downstream do the silencing. It's matched to the WK and WL body.

Larger primaries versus the factory manifold

The 1⅞in tube-and-merge extractors open the path off the head far more than the factory cast manifold, which is the choke point. Choosing the larger primary is an application call — it favours top-end breathing on an engine making more than standard output, which is the reason to step up to this size rather than a smaller-primary street setup.

Road compliance and fitting at our Illawarra workshop

Because this changes the exhaust at the head, road compliance depends on the full build and your state's requirements — we'll confirm that with you rather than have you assume it. Oak Flats Muffler Men fits Statesman systems like this across the Illawarra; it's listed to fit the WK and WL Statesman V8, so send your build and we'll confirm clearances and the dual routing 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's distinctive about the SSMKHN0305?
It pairs 1⅞in larger-primary extractors with a muffler-to-muffler finish — bigger-primary breathing with a quieter, more-silenced result.
Which Statesman does it fit?
It's listed to fit the Holden WK and WL Statesman V8. Confirm your exact model and build with the workshop before ordering.

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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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.