New spy shots have emerged that appear to showcase a hardcore variant of the BMW M4, potentially dubbed the M4 CS or M4 CSL.
Our spy photographers have snapped a handful of heavily-camouflaged BMW M4 prototypes testing in recent months. This particular prototype lacks camouflage on its doors and rear quarter panels, providing us with a better look at its exterior design.
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The first thing that stands out with this BMW M4 CS / CSL variant is the fitment of a larger front splitter to aid in aerodynamics. Elsewhere, the side skirts appear a little more pronounced than the standard M4 and M4 Competition models and the prototype has a unique set of wheels sitting over gold brake calipers. The only styling change that’s immediately obvious from the rear is an enlarged lip spoiler.
Regardless of whether this new version of the BMW M4 is dubbed the CS or the CSL, we do have a reasonably good idea of what to expect from it. For example, BMW will probably follow a similar formula to other CS / CSL models launched in the past by shedding some excess pounds thanks to the fitment of new carbon fiber parts. The car could probably also make do with less soundproofing.
In addition, BMW’s M division will inevitably have some fun with the sports car’s 3.0-liter twin-turbocharged straight-six, altering it so it delivers in excess of the 503 hp and 479 lb-ft (650 Nm) delivered by the M4 Competition. It remains unclear if the car will be offered with a six-speed manual gearbox or simply the 8-speed automatic offered in the regular M4 and M4 Competition models.
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