RZ-38 DIRT HelmetZamp proudly introduces the RZ 38 DIRT, a Snell SA2025 certified helmet built specifically for dirt racers who demand protection, comfort, and focused performance at an unbeatable price. Featuring the same proven shell as our standard RZ 38 model, the DIRT version is optimized for off road use with reduced venting to block out dust and roost. This model includes a pre installed upper chin curtain to prevent dirt and debris from entering the helmet