Look for DOT certification at minimum, plus Snell M2020D for highest safety. The Shoei RF-SR ($480), Schuberth C5 ($700), and HJC i70 ($190) consistently score highly in safety testing. Always prioritize proper fit over brand - an ill-fitting premium helmet is less safe than a well-fitted budget option.
Budget $150-250 for entry-level safety (HJC, Bell). Mid-range $300-500 offers better comfort and features (Shoei, AGV). Premium $600+ adds advanced materials and refinement. All DOT-certified helmets meet minimum safety standards - spend what you can afford and prioritize fit.
Replace your helmet every 5 years regardless of condition - materials degrade over time. Replace immediately after any impact, even if no visible damage. Newer helmets consistently outperform older designs in safety testing.