2021+ BMW G8X M3/M4 Hot Side Intercooler Charge Pipe KitThe venerable S58 found in the G8X M2, M3, and M4 follows BMW's tried and true formula of six cylinders in a row sending power to the back wheels for maximum tire torturing fun. From the factory, the S58 cranks out up to 503 horsepower and 479 lb. ft. of torque, but the two turbos tucked next to the engine whisper a tale of limitless possibilities with every shove of the throttle. If you can't hear them, it might be time to let them whisper a little