German tuning brand Manhart has a nifty pair of new BMWs to call its own: The MH3 600 and MH4 600. Based on the all-new G80 BMW M3 sedan and G82 M4 coupe, both the MH3 600 and MH4 600 receive a plethora of upgrades, including a 600-plus horsepower turbocharged inline-six motor.

Manhart starts with the 2021 M3 and M4 Competition models, both pumping out 510 horsepower from the factory. 
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