Is 12.4 kg bmx is good for street?

A 12.4 kg BMX bike is on the heavier side for street riding, where lighter bikes are generally preferred for tricks and maneuverability. However, if the bike is well-constructed and has the right components, it can still perform adequately for street use. Ultimately, the best choice depends on your riding style and personal preference. If you're comfortable with the weight and it suits your needs, it can work for you.