McLaren MP4-12C / 12C Spider V8 biturbo Valved Exhaust System (2011-2014)

The McLaren MP4-12C / 12C Spider exhaust in detail.

The founder of the McLaren revival, the MP4-12C is today one of the most accessible supercars on the used market. Its twin-turbo V8 develops 625 hp and 600 Nm according to our data, and its factory sound, heavily criticised at the time, is completely transformed with a system worthy of its engineering. Our page covers 2011 to 2014; the 650S that succeeded it has its own system.

Sharp and piercing at high revs, this V8 was held back by a factory exhaust designed for discretion. With the valves open, the Rog cat-back finally gives it a soundtrack to match its performance: a technical growl, the breathing of the turbos, bangs on the overrun; with the valves closed, the 12C becomes discreet again.

The 12C can also receive the catalysed downpipe offered under the “Manifold” option, the part that follows the turbos. Remapped, it reaches 735 hp and 720 Nm at Stage 2 according to our data; without a map, the downpipe only changes the voice and a little of the mass, and its 200-cell version keeps treating emissions.

Under the 12C, the exhaust fits in about two hours with clamps and gaskets, no welding, and the factory system can be stored in the garage. Factory valves are retained with their control, otherwise the Rog remote. Titanium, around 40% lighter than 304 stainless steel for the same design, comes in brushed, gold or purple, and each exhaust is manufactured to your VIN, checked before production.