Alpinestars SM5 Action Motorcycle Helmets

Replaces the original S‑M3 Radium visor to restore clear vision, glare control, and full off‑road protection.

Best for

• Riders using the Alpinestars S‑M3 Radium helmet
• Motocross and off‑road conditions requiring debris protection and reduced glare

Not ideal for

• Any helmet outside the Alpinestars S‑M3 series

What this product does

Installs directly onto the S‑M3 shell to maintain the helmet’s aerodynamic profile, optical clarity, and safety performance.

Compatibility

• Alpinestars S‑M3 Radium Helmet (all sizes)
• Not compatible with S‑M5, S‑M7, S‑M8, S‑M10, or other brands

Benefits

• Radium coating reduces glare and improves visibility
• High‑impact resistance for off‑road debris
• Works with the S‑M3 visor release system for safer crash performance
• ECE 22.06 certified for current safety standards

Technical specs

• High‑impact polycarbonate construction
• Radium optical coating
• Integrated mounting points for tool‑less installation
• Aerodynamic profile with glossy Black/Red Fluo/White finish