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When the BMW M4 CSL debuted earlier this year, it was only the third M car to ever wear the CSL badge throughout BMW M’s 50-year history. Prior to the M4 CSL, only two have been blessed with the CSL badge, and these include the (E9) 3.0 CSL and the (E46) M3 CSL. That’s because weight shedding has been the main driving point of all CSL (which means Competition, Sport, Lightweight) vehicles, but did you know that four more CSL cars were actually almost put into production?
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