BMW has just done the unthinkable, revealing that a base model M2 has just outpaced the more expensive M2 CS around the Nürburgring. That claim, however, comes with a caveat. The regular M2 was not without modifications; namely the fitment of BMW’s new M Performance Track Kit.

The new accessory package has been designed specifically for track use, and comprises a detailed list of upgrades including coilover suspension, an adjustable swan-neck rear spoiler and adjustable front splitter, and front aero flics.

Chassis control software also gains a new, dedicated Race Mode. The result was a Nürburgring lap time of 7 minutes and 25.068 seconds, making the M Performance Track Kit-equipped M2 0.5 seconds quicker than BMW’s official time set by the M2 CS.

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Development of the new package was led by Jörg Weidinger, BMW M’s project manager for driving dynamics with European and German Hill Climb Championships to his name, and regular participation in Nürburgring 24-hour races. Despite the track performance focus, the kit has been design with full on-road compliance in Germany and meets Technischer Überwachungsverein (TUV) approval, from Germany’s Technical Inspection Association.

The ‘regular’ model is powered by a 353kW 3.0-litre twin-turbo inline six-cylinder engine, backed by 550Nm of torque with a six-speed manual, or 600Nm with an eight-speed automatic. The faster CS is only available with an automatic, but kicks outputs up to 390kW and 650Nm.

Other CS changes includes 30kg weight reduction, stiffer engine mounts to reduce drivetrain movement under acceleration, lowered suspension with firmer springs and dampers, plus tweaks to the chassis control software.

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There is a catch, however. Pricing for the M Performance Track Kit starts from €23,500 in Germany (A$38,670 at current exchange rates) before taxes and installation – almost matching the $44,300 price gap between the $128,600 M2 and the $172,900 M2 CS in Australia.

BMW Australia’s M Performance parts range extends to carbon-fibre styling packages, wheels, suspension and exhausts, but doesn’t yet include the M Performance Track Kit.