Manhart MH3 600 and MH4 600 are spicier versions of BMW's M3 and M4
Alvin Reyes - Mar 4, 2021, 5:29am CST 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. After installing a Manhart MHtronik Powerbox, the inline-six motor has a new maximum output of 620+ horsepower, around 100 more horses than stock. Additi...