
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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MPI Automotive GWM Cannon Alpha Ute,2.0L Turbo Petrol Hybrid,2025 On,3in Catback Centre & Extended Rear Muffler.
Category: Mufflers and resonators


This is the twin-silencer build: the MPI Automotive SSMKGW0011 is a 3in cat-back with a centre muffler and an extended rear muffler, listed to fit the GWM Cannon Alpha 2.0L turbo-petrol hybrid ute (2025-on). Running two mufflers — one centre, one extended at the rear — is what sets it apart from its single-muffler siblings.
The SSMKGW0011 carries a centre muffler and an extended rear muffler, so it has two chambered silencers in the run rather than one. The centre muffler does the first stage of quietening in the middle of the system, and the extended rear muffler handles the second stage at the back. On the Cannon Alpha that pairing keeps the note the most composed of the three builds, since the gas passes through two silencers before it exits.
A cat-back replaces the exhaust from behind the catalytic converter rearward, leaving the cat and front section in place. The supplier lists this at a 3in bore, sized to suit the 2.0L turbo-petrol hybrid rather than a small engine. Both mufflers sit within that 3in run — centre and rear — so the bore stays consistent through the system while the two silencers shape the result.
It is listed to fit the GWM Cannon Alpha 2.0L turbo-petrol hybrid ute from 2025. With a centre and an extended rear muffler the routing is longer than the simpler builds, so send the workshop your exact build and we will confirm the 3in routing and both muffler positions before you order.
Oak Flats Muffler Men supplies and fits this cat-back in-house across the Illawarra. We confirm it against your Cannon Alpha, check the 3in routing and clearance at both the centre and rear mufflers, and book the bay once fitment is verified. It is a brought-in item; the listed recommended retail is $2,344.05, which we confirm with you along with availability before ordering.
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.