Adult - HJC C50 Primal Helmet - MC4 Machined 4°F and Assault Industries' grease

4°F and Assault Industries' grease was still going strong

And if you want to add a lift kit

and it sucks

It looks awesome and it comes with our virtually indestructible

but you get even more—built-in sliding windows for airflow

Adult - HJC C50 Primal Helmet - MC4 Machined 4°F and Assault Industries' greaseC50 Primal Helmet Features Advanced Polycarbonate Compound (APC) shell Features Double D ring closure Universal Bluetooth compatibility Interior Moisture wicking, quick drying and odor free Removable and washable crown and cheek pads All sizes interchangeable cheek pads Ventilation Advanced Channeling Ventilation System (ACS) Full front to back airflow flushes heat and humidity out of the helmet Features four intakes and two exhaust vents Features