I'm not a safety expert, but I can provide some general information. If a motorcycle helmet is cracked, it is generally recommended to replace it rather than continue using it. Even if the crack appears to be small or superficial, it can significantly compromise the helmet's ability to protect your head in the event of an accident.
Helmets are designed to absorb impact energy and protect your head from injury. A crack can weaken the structural integrity of the helmet, making it less effective at absorbing and distributing the force of an impact. Additionally, cracks can spread and worsen over time, further compromising the helmet's protective capabilities.
It's important to prioritize your safety and invest in a new helmet if your current one is cracked. Helmets should be replaced after any significant impact or if there are signs of damage, such as cracks, dents, or visible wear and tear. It's recommended to consult with a helmet manufacturer, safety expert, or a reputable dealer for specific guidance on helmet replacement based on the extent of the damage.