Alpinestars · SM5
Alpinestars SM5
Design Concept & Background
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Alpinestars SM5 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
| Marketplace | Price | Availability | Updated | |
|---|---|---|---|---|
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Amazon (US)
Store Profile
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$289.95 | ● In Stock | 1 second ago | Buy Now → |
Certified Alpinestars Stores in US
Price History
Product Concept & Specifications
Alpinestars (Italy)Engineering & Technical Analysis
The Alpinestars SM-5 utilizes a lightweight composite shell construction reinforced with carbon fiber inserts to maximize rigidity while minimizing weight. Its internal suspension system features an advanced EPS liner with variable density zones, ensuring optimal energy absorption across diverse impact vectors typical of motocross environments.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Moderate Index: Standard wind noise suppression at highway speeds. Good flow balance utilizing EPS exhaust ports.
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, HUD compatibility, or specific road-legal homologation standards like ECE 22.06.
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.
Part numbers
| Product style | MFR. product # | SKU | Availability |
|---|---|---|---|
| Matte Black / | — |
ALP-SM5-BLK | instock |
| Pearl White / | — |
ALP-SM5-WHI | instock |
| Racer TC-2 / | — |
ALP-SM5-RAC | instock |
| Course Blue / | — |
ALP-SM5-COU | instock |
Available Colors & Graphics
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