The Thor Sector Chev Helmet is designed for motocross and off-road riders who want lightweight protection, strong ventilation, and dependable riding comfort. Its injection-molded polycarbonate/ABS shell, dual-density EPS liner, adjustable visor, and removable moisture-wicking interior make it a solid choice for motocross, trail, ATV, and off-road riding.

• Injection-molded polycarbonate/ABS shell
• Dual-density EPS liner helps provide progressive impact absorption
• Extensive ventilation with internal air passages for cooling
• Fully adjustable visor provides ample coverage
• High-flow mouth vent with filter helps keep roost out
• Flexible rubber nosepiece helps deflect roost
• Rear shell shape helps reposition and secure the goggle strap
• Removable and washable moisture-wicking liner
• DOT and ECE 22.05 certified
• Designed for motocross, trail, ATV, and off-road riding

Thor Adult Helmet Size Chart

How to Measure: Wrap a soft measuring tape around the widest part of the head, just above the eyebrows and ears. Keep the tape level and comfortably snug.

Fit Note: A motocross helmet should fit securely around the crown and cheeks without painful pressure points or excessive movement. Do not intentionally size up for a loose fit.

The interactive size finder uses head circumference in inches to recommend the appropriate helmet size.