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The O'Neal Sierra II adventure motocross helmet in Slingshot Black. The ONeal Sierra 2 dual sport helmet is brand new to the market and designed exclusively for adventure and motocross riders. The outer shell is moulded lightweight high-grade ABS thermoplastic polymer with a total of 17 vents to keep you cool. The ventilation is adjustable on the mouthpiece allowing you to optimise the airflow to your own comfort levels. A chin skirt keeps the noise level down on the tarmac. The ultra-plush padded internal liner is removable and washable and fast at wicking away perspiration to keep you dry. The helmet has an internal flip-down sun visor and the external clear visor can be removed for open face riding with googles. The retention strap has a double-D fastening. The O'Neal Sierra II adventure motocross helmet is also available in Slingshot Blue, Slingshot Orange, and Matt Black.
- Designed exclusively for adventure and motocross
- Outer shell is moulded lightweight high-grade ABS
- Internal liner is removable and washable
- Internal flip-down sun visor
- External clear visor can be removed