The Thor Youth Sector Split MIPS Helmet is designed for young motocross and off-road riders who need lightweight protection, ventilation, and a secure youth-specific fit. Its injection-molded polycarbonate/ABS shell, MIPS® safety system, EPS impact liner, and removable moisture-wicking interior make it a strong choice for motocross, trail, ATV, and off-road riding.

• Youth-specific motocross and off-road helmet design
• MIPS® safety system helps reduce rotational forces transmitted to the head during certain impacts
• Injection-molded polycarbonate/ABS shell
• EPS impact liner with extensive ventilation
• Fully adjustable vented visor helps reduce lift
• Removable and washable moisture-wicking liner
• Flexible rubber nose piece
• High-flow mouth vent with intake filter
• Rear shell shape helps keep the goggle strap positioned securely
• DOT and ECE 22.05 certified
• Size: Youth Small

Thor Youth Helmet Size Chart

How to Measure: Wrap a soft measuring tape around the widest part of the rider's head, just above the eyebrows and ears. Keep the tape level and comfortably snug, then repeat the measurement and use the larger result.

Fit Note: A youth helmet should fit securely around the crown and cheeks without painful pressure points or excessive movement. Do not intentionally choose a larger helmet to allow room for growth.

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