Mitsubishi Lancer Evolution X GSR CZ4A 2.0 Valved Exhaust System (2008-2015)

The Mitsubishi Lancer Evolution X GSR exhaust in detail.

The last of the line, the Lancer Evolution X GSR is built around the 4B11: a 2.0-litre four-cylinder with an aluminium block, variable valve timing and a turbo, delivering 295 hp and 366 Nm to all four wheels through a controlled all-wheel-drive system. The torque arrives firmly in the mid-range, and the car exits corners with formidable efficiency, in the dry as in the wet.

This engine has the voice of turbocharged four-cylinders born for competition: deep and gravelly at low revs, then sharp and furious higher up, punctuated by the whoosh of the turbo, which the Evo X’s factory exhaust only delivers in a polished version. With the valves open, the Rog valved cat-back gives the Evo X a hoarse start-up and a biting climb through the revs; with the valves closed, it becomes discreet enough for daily use.

The page is for the 2008 to 2015 GSR CZ4A, and that model alone; your VIN is checked before manufacturing. With clamps and gaskets, no welding, fitting takes about two hours, with the factory valve control retained if the car has one, otherwise the Rog remote.

Under the “Manifold” option, the page sells the front part that carries the original catalytic converter. On an Evo X that has remained stock, this part changes the voice and a few kilos; it is the map that turns it into power, and no Stage 2 figure is published on the page. For an Evo X driven on open roads, the 200-cell version remains the one that keeps emissions control, the 100-cell version will be accepted or not depending on the car and the rules in your country, and the decat version is reserved for track use, for GSRs prepared for competition. The Evo X’s round outlets come in 304 stainless steel or titanium, the latter around 40% lighter, one more argument on a car designed for efficiency.