The O’Neal Sierra II Helmet in Black is a rugged dual-sport full-face helmet built for both street and off-road adventures. Its durable ABS shell provides reliable impact protection while remaining lightweight, and the integrated ventilation system and moisture-wicking, removable liner keep you cool and comfortable on long rides.

Featuring a built-in face shield, height-adjustable visor, and padded double-D ring chin strap, the Sierra II meets DOT safety standards and offers versatile protection for adventure, enduro, and dual-sport riders. Available now at DMG Motorsports, your trusted source for high-quality riding gear.

• Shell in constructed with ABS

• Weight: 1590g (± 50g)
• Moisture wicking, removable/washable air channeled comfort liner
• Vent holes for optimal ventilation
• Integrated face shield
• Height adjustable helmet shield
• Padded Chin Strap with Double-D safety lock
• Meets DOT safety standard
• Designed for Street, Enduro, Side by Side and Adventure Bike’s
• Replacement parts available