The XForce Varex cannon: the muffler you can turn down

The argument against a cannon muffler has always been the same one: you cannot take the noise back. Once it is welded in, your truck sounds like that at 6am, on the highway, and in the underground car park at work. The XForce Varex cannon is the first product we fit that genuinely ends that argument, because the noise is a setting, not a sentence.

What you are looking at

This is a 304 stainless steel cannon, 7 inch round body, 15 inches long, with a 3 inch two-bolt flanged inlet and a single 4.5 inch outlet tip. Inside sits XForce's patented butterfly valve, driven by an electric actuator motor mounted on the body. The kit runs through a wiring harness with a water-resistant connector to a control module, and you drive it from the remote control keypad, stopping the valve anywhere between fully closed and fully open. An optional Bluetooth Smartbox adds app control with valve adjustment down to one percent if you want it that fine. The 304 grade is worth noting, because most budget cannons are 409 or aluminised steel, and 304 is the one that still looks like metal after two coastal winters.

How it behaves on the road

Valve closed, the note sits close to stock with a deeper edge, quiet enough that nobody at the daycare pickup turns around. Fully open, it is a straight-through cannon and sounds like one. The in-between settings are genuinely useful when towing, where you want some note without the fatigue. The honest con: the valve is an electric moving part living under a 4x4, and mud, dust and corrugations are not its friends. Cycle it regularly and give it a clean when you wash the chassis, or it will eventually stick. And fully open on a turbo diesel at 110 will drone, the same as any straight-through cannon. Noise rules still apply when the valve is open, so treat that setting like a tool, not a default.

Fitment and price reality

The muffler is $499. It is a universal unit, so it needs pipework made to suit your system, plus the wiring run forward to the cabin, and the actuator wants about 2 inches of clearance. On most utes that is a few hours of proper fabrication and loom work, which is exactly the part you want done by someone who does it weekly.

The workshop call

If you have been talking yourself out of a cannon because of the neighbours, this is the answer, and the 304 build means you buy it once. The 3 inch inlet suits most 4x4 systems but not all, so let us confirm sizing against your exhaust before you order anything. Call the workshop for a fitted quote and we will sort the pipework, the wiring and the valve setup in one visit.

See full specs, supplier details and the workshop note on the part page: VMK2G-300.