Alpinestars · SM5 · Alpinestars SM5
Alpinestars SM5 Pearl White
Quick Facts at a Glance
Verified Safety Snapshot
How this helmet’s verified certifications map to recognized safety homologations and crash testing.
Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.
Verified Fit & Sizing Guide
Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.
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.
Design Concept & Background
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Dominate the track and trail with the Alpinestars SM5 in a striking Pearl White finish, designed for riders who demand uncompromising performance without sacrificing style. This dirt-specific helmet features an aggressive aerodynamic profile that slices through the air, reducing drag and minimizing wind noise for enhanced focus during intense off-road sessions. The interior is lined with moisture-wicking fabric and customizable EPS padding, ensuring a secure, race-ready fit that adapts to your head shape perfectly. With its robust construction meeting rigorous safety standards, the SM5 offers peace of mind when pushing limits on rough terrain. Whether you are navigating technical single-track or racing on closed circuits, this helmet delivers superior ventilation through strategic intake and exhaust ports, keeping you cool even in the hottest conditions. Elevate your riding experience with a piece of gear that blends cutting-edge technology with timeless Alpinestars heritage.
Key Highlights:
Rider Profile & Intended Use
Where to buy
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Amazon (US)
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Price History & Trends
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Product Concept & Specifications
Alpinestars (Italy)Engineering & Technical Analysis
The SM5 utilizes Alpinestars' proprietary EPS liner architecture with a multi-density foam construction to optimize impact absorption across the chin and temple regions. Its aerodynamic shell geometry is engineered to manage airflow turbulence at high speeds while maintaining structural rigidity under lateral G-forces typical of motocross racing.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
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
View on retailers
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Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.