Having set The New Reference for design, BAC’s talented engineers have ensured Mono R breaks new ground with its engine, too. Co-developed with long-standing engine partner Mountune, the Mono’s 2.5-litre, four-cylinder unit has increased in power by 38bhp to deliver an astonishing 343bhp. BAC and Mountune left no stone unturned when it came to meeting power targets: increasing the cylinder bore size and reducing new billet crankshaft stroke to optimise power and torque delivery and increase rpm from 7,800rpm to 8,800rpm.

The striking new Formula-inspired ram-air inlet system provides pressurised air into an all-new throttle body and cylinder head system to further increase power, plus a higher-spec, drive-by-wire motor allows for a quicker throttle response.

As a result, the bespoke Mountune engine now offers 137bhp per litre – a new naturally aspirated global record for a road-legal model.