SSMKCH0025

Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in Turbo Back With Cat & Without

Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in Turbo Back With Cat & Without Muffler.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $6840.17 AUD
In stock at supplier
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Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in Turbo Back With Cat & Without Muffler product image

Part specs

SKU
SSMKCH0025
Supplier
MPI Automotive
Category
Mufflers and resonators
Vehicle fitment
Chevrolet
Stock status
In stock at supplier

Keeping the catalytic converter on a full-length turbo-back while deleting the muffler is what sets the MPI Automotive SSMKCH0025 apart. This stepped 4in-to-5in section is listed to fit the Chevrolet Silverado 2500 HD T1 6.6L turbo-diesel V8 (2020–2025).

What does the cat-retained, muffler-deleted turbo-back give you?

A turbo-back runs from the turbo outlet rearward — the longest section in this range. The SSMKCH0025 takes that stepped 4in-into-5in run, keeps the catalytic converter, and deletes the muffler. The result opens the note up over a muffled system while leaving the emissions converter in place — the louder choice that still retains the cat.

Is it road legal?

Because the SSMKCH0025 keeps the catalytic converter, the cat-delete compliance issue doesn't apply to this variant — the converter stays fitted. Deleting the muffler changes the note considerably, so confirm noise levels and any state requirements with the workshop before fitting; emissions hardware is only one part of registration.

Will it suit my Silverado 2500 HD?

It's listed to fit the 2020–2025 Chevrolet Silverado 2500 HD T1 6.6L turbo-diesel V8. Send your build to the workshop so we can confirm the listing against your truck before ordering. The bore figures here are the section's own spec.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men supplies and fits this MPI Automotive turbo-back in-house across the Illawarra. We confirm hanger positions on the stepped 4in-5in muffler-free run, check the listed Silverado fitment, and book the bay. The RRP is $6,840.17.

Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.

Common questions

Does the SSMKCH0025 keep the catalytic converter?
Yes. This is the with-cat, no-muffler turbo-back, so the converter stays in place while the run is muffler-free.
Is it louder than a muffled turbo-back?
Yes — with the muffler deleted the note opens up. We don't publish decibel figures, so we'd talk it through before fitting.
Will it fit my 2500 HD?
It's listed to fit the 2020–2025 Silverado 2500 HD T1 6.6L turbo-diesel V8. Confirm your exact build with the workshop first.

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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