Alpinestars · SM5 · Alpinestars SM5
Alpinestars SM5 Course Blue
Design Concept & Background
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Alpinestars SM5 Course Blue is a high-performance Dirt/MX helmet engineered by Alpinestars to meet high standards of safety and comfort. Inspect its detailed design background and specifications below.
Key Highlights:
Rider Profile & Intended Use
Where to buy
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Amazon (US)
Store Profile
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$339.95 | ● In Stock | 1 second ago | Buy Now → |
Certified Alpinestars Stores in US
Price History
Product Concept & Specifications
Alpinestars (Italy)Engineering & Technical Analysis
The SM-5 Course utilizes Alpinestars' proprietary Multi-Density EPS liner and a composite shell architecture to maximize impact absorption while maintaining a lightweight profile. Its aerodynamic shaping is specifically tuned for motocross, featuring a low-profile visor and optimized airflow channels that reduce drag without compromising cooling efficiency during high-intensity riding.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Quiet Index: Superior sound damping and isolated ear cavity structures. High flow channels optimize high-velocity dynamic ventilation.
Technology & Convenience
Regional Legality & Compliance
Certified for use in the United States; meets DOT FMVSS 218 standards.
Compliant with ECE 22.05 regulations for use in European markets.
Accepted for use in Canada under DOT standards.
Regional Legality Guidance
Interactive Size & Fit Finder
Alpinestars SM5 is a motocross/dirt helmet designed for off-road use; it does not feature integrated speakers, cable management ports, or HUD compatibility.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Available Colors & Graphics
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