
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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GWM Cannon Alpha Ute, 2.0L Turbo Petrol Hybrid, 2025 On, 3in Over Axle Without Rear Muffler for selected vehicle applications.
Category: Mufflers and resonators


The MPI Automotive MBM812WOM is a 3in over-axle pipe for the GWM Cannon Alpha ute (2.0L turbo petrol hybrid, 2025-on), built without a rear muffler. It's the keener-priced, freer-flowing over-axle section — no rear can, so it finishes louder.
The over-axle pipe is the run that arcs up and over the rear axle to the tailpipe. This MBM812WOM does that 3in span without a rear muffler in it, so there's no quietening stage at the back of this section and the ute finishes louder and freer-flowing than a muffled version. It's the choice for an owner who wants the more open note this section can give and the lower price that comes with leaving the muffler out. The rest of the system still does its quietening; this part doesn't add any.
At a published RRP of $294.80, the MBM812WOM is the value entry of the Cannon Alpha over-axle options — it's the plainer-finish, no-muffler section, which is why it lands at the lower price point. If you want the upgrade without paying for a rear muffler or a premium finish, this is the keenest path. It's listed to fit the GWM Cannon Alpha 2.0L turbo petrol hybrid ute from 2025; confirm your exact build with the workshop.
This is an over-axle pipe, not a cat-back or cat-delete — it doesn't touch the catalytic converter, so the cat-delete off-road rules don't apply to this part. Running without a rear muffler raises the finished volume, which can put a vehicle outside noise limits, so confirm the in-service note and any state requirements with the workshop before fitting.
Oak Flats Muffler Men fits Cannon Alpha over-axle sections in-house across the Illawarra, checking the pipe clears the axle through its travel and mates to the rest of the system. The MBM812WOM carries a published RRP of $294.80; send your build 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.
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.