
Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in Turbo Back With Cat
MPI AutomotiveRRP$7103.73Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in Turbo Back With Cat & Muffler (SKU: SSMKCH0024) Engineered.
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Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in T/Back, Suits OEM Tailpipe, Cat & Without Muffler.
Category: Mufflers and resonators


Keeping the catalytic converter while deleting the muffler is the defining choice on the MPI Automotive SSMKCH0030. This 4in turbo-back section is listed to fit the Chevrolet Silverado 2500 HD T1 6.6L turbo-diesel V8 (2020–2025) and suits the OEM tailpipe.
The SSMKCH0030 holds the catalytic converter in place while running the 4in section muffler-free. That opens the note up over a muffled system — there's no rear silencer — while leaving the converter where the factory put it. It mates to the OEM tailpipe, so the rear exit stays standard while the upstream run is freed up.
Because the SSMKCH0030 keeps the catalytic converter, the cat-delete compliance issue doesn't apply to this variant — the converter remains fitted. Deleting the muffler does change the note significantly, so confirm noise levels and any state requirements with the workshop before fitting; emissions hardware is only one element of registration.
It's listed to fit the 2020–2025 Chevrolet Silverado 2500 HD T1 6.6L turbo-diesel V8. As it's built to suit the OEM tailpipe, send your build to the workshop so we can confirm the listing and tailpipe interface against your truck before ordering.
Oak Flats Muffler Men supplies and fits this MPI Automotive section in-house across the Illawarra. We confirm the OEM tailpipe connection and hanger positions on the muffler-free 4in run, check the listed Silverado fitment, and book the bay. The RRP is $4,106.67.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.