To the delight of their customers, engineers at BMW M have been showing us the best features of their latest supercars, so let’s loot at the 2021 BMW M3 and M4 crank and rods in detail. The straight-six engine was nearly killed by the bean counters because it is longer than V8 and V6 blocks. But it is still the best way to make incredible torque at any rpm. The S58 offers 510 horsepower and 479 lb-ft from only 3 liters. It does so in the M3 and M4 by using every advancement learned in motorsports. This forged bottom end is cross-drilled and the pistons have low-friction coatings. What really shows their dedication to longevity are the cracked connecting rods. This expensive procedure is reserved for the world’s best cars, and that’s why you deserve a new BMW for sale.
Image (C) BMW M GMBH