BMW makes fast, sporty cars, but what do you do if you just need a little more kick in the engine? You go to German tuning firm Manhart Racing, and they will take your roadster to the next level.
Here is what Manhart did with a BMW Z4 M (a super fast car to begin with). They took out the six-cylinder engine and dropped in a 5-liter V10 from a BMW M5, then they "modified the engine further to deliver a whopping 550 horsepower that, in a 1450kg car is good for a supercar-rivaling sprint to sixty in just 3.9 seconds." In layman’s terms that means it goes super duper fast.
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