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The CMST Jaguar F-Type valved exhaust is a SUS304 stainless-steel cat-back system with a second-generation remote-controlled valve and carbon-fibre tips. It lets you switch between a quiet, near-stock note for town driving and a fuller, deeper tone when the valves open, while smoother bends and a less restrictive path lower back-pressure compared with the standard system. The whole system is TIG-welded, brushed and polished, and the carbon tailpipe tips resist heat and corrosion better than a typical chromed tip.

• Vehicle: Jaguar F-Type
• Type: valved cat-back exhaust, twin dual-exit layout
• Material: SUS304 stainless steel, brushed and polished
• Valves: second-generation remote-controlled, open/close on demand
• Tips: carbon-fibre, heat- and corrosion-resistant

Why a valved exhaust on the F-Type

The Jaguar F-Type already has one of the better factory exhausts in its class, particularly on the V8, where an active valve gives it real character. The point of a CMST cat-back is not to fix a flaw but to extend the range: a wider gap between the car's quiet side and its loud side, a deeper tone at the top end, and a slightly freer-flowing path. For owners who want their F-Type to sound bigger when they ask for it — and to behave when they do not — a valved system is the logical upgrade.

Because it is a cat-back, the system replaces everything from the catalytic converters rearward. That keeps the car's emissions hardware in place while giving the back half of the exhaust a new muffler design, smoother routing and the controllable valves that make the difference day to day.

Construction: SUS304, welds and finish

The system is built from SUS304 stainless steel, the grade widely used for performance exhausts because it resists the heat and corrosion an exhaust lives with. CMST describes the welding as master-grade, and the photos show consistent TIG beads at the Y-junctions and around the muffler — the joints that matter most for durability and flow. The pipework is brushed and polished, so the parts you can see under the car look finished rather than industrial.

Good welds are not just cosmetic. Clean, fully fused joints on mandrel-style bends keep the internal diameter consistent so gas is not slowed at every junction, and they resist cracking under the heat-cycling and vibration an exhaust endures. The muffler-to-pipe transitions in particular take a lot of thermal stress, which is why the quality of those beads is worth looking at on any aftermarket system.

How the remote valve works

The headline feature is the second-generation remote-controlled valve. Each tailpipe path has a valve that the driver opens or closes on demand, typically from a key-fob-style remote. Closed, exhaust gas is routed through more silencing, so the car runs at a restrained volume — useful in town, in car parks, or early in the morning. Open, the gas takes a more direct path, and the system delivers its fuller, deeper voice along with sharper response at higher revs.

The practical value of a valve is that it resolves the usual aftermarket-exhaust compromise. Instead of choosing once between quiet and loud, you choose every time you drive. That makes a loud system genuinely liveable: you keep neighbours and noise cameras happy on the commute, then open everything up on an open road where it belongs.

Carbon-fibre tips and flow

The system finishes in carbon-fibre tailpipe tips. Carbon handles exhaust heat well and does not corrode the way a chromed steel tip eventually can, so the tips keep their look longer. Visually they suit the F-Type's tail and tie in neatly if the car already wears carbon elsewhere.

On flow, the honest position is general rather than dyno-specific. A cat-back with smoother bends, shorter or better-routed paths and a freer muffler reduces back-pressure, which can improve high-rpm response and exhaust scavenging. It is not a power package on its own, and gains depend on the rest of the car's setup, but the system removes restriction in the back half of the exhaust and frees up the sound. We do not quote a horsepower figure because cat-back gains on an already-strong factory exhaust are modest and vary car to car.

What it sounds like

The F-Type's engine shapes the result. On the supercharged V6, the system tends to bring out a harder, raspier edge with more crackle on a lift; on the supercharged V8, it deepens an already V8-rich tone and makes the overrun more pronounced. With the valves closed, the car settles to a civil hum that will not draw attention at a cold start. Open, the volume steps up and the tone fills out, especially through the mid-range and toward the redline where the freer path is doing the most work.

Two things worth setting expectations on. First, an aftermarket cat-back can introduce some resonance or drone at certain cruising rpm; a well-designed muffler and the option to run the valves closed both help keep that in check, but it is sensible to listen to a system on the same engine before committing. Second, the loudest, most dramatic crackle and pop on the overrun is partly a function of engine tuning, not the exhaust alone — the pipework gives the sound room to come through, but how much you get depends on the car's mapping.

Living with it: maintenance

SUS304 stainless is low-maintenance, but a few habits keep the system looking and working its best. Wipe the carbon tips occasionally to clear soot, and avoid harsh abrasives on the carbon lacquer. After driving in the wet or on salted roads, a rinse helps protect the welds and hangers. Periodically check that the valve actuators move freely and the wiring and remote are intact, particularly after the car has been on a hoist for other work. Treated this way, a quality stainless cat-back will outlast many other consumables on the car.

Fitment in Australia

The system is a bolt-on cat-back designed to mount to the F-Type's factory hangers and connect at the standard cat-back joint, so fitting is straightforward for an experienced workshop. We recommend professional fitment so the valves, wiring and remote are set up correctly and the tips sit evenly in the rear bumper or diffuser. A note on the law: exhaust noise is regulated in Australia and limits vary by state, so a valved system that can be closed to a quieter setting is a sensible way to stay compliant — run it closed where required and keep documentation of the system's behaviour.

You can see the range in our Jaguar Exhaust collection, compare cat-back options under AME Motorsport cat-back exhaust for Jaguar, and look at the broader catalogue in CMST cat-back exhaust.

FAQ

What material is the CMST F-Type exhaust made from?

It is built from SUS304 stainless steel, a grade chosen for its resistance to exhaust heat and corrosion. The pipework is TIG-welded, brushed and polished, and the system is finished with carbon-fibre tailpipe tips.

How does the valve control work?

The system uses a second-generation remote-controlled valve. The driver opens or closes the valves on demand — closed for a quiet, near-stock note in town, open for a fuller, deeper sound and sharper high-rpm response on an open road.

Will this exhaust add power to my F-Type?

A cat-back like this lowers back-pressure with smoother bends and a freer muffler, which can help high-rpm response and scavenging, but it is not primarily a power upgrade. Any gains are modest and depend on the rest of the car's setup, so we do not quote a fixed horsepower figure.

Is it a full system or cat-back?

It is a cat-back system, replacing the exhaust from the catalytic converters rearward. The factory catalytic converters stay in place, so the car keeps its emissions hardware while gaining a new muffler, smoother routing and the remote valves.

Can I keep it quiet for daily driving in Australia?

Yes — that is the main benefit of a valved system. Exhaust noise limits vary by Australian state, and running the valves closed keeps the car at a restrained volume for daily driving, town use and noise-sensitive areas, while still letting you open it up where it is appropriate.

Want a valved F-Type exhaust that is loud on demand and quiet when it has to be? Explore options in our Jaguar Exhaust range and ask the AME Motorsport team about fitment for your car.