Alpinestars · SM5
Alpinestars SM5 Parelwit
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
"Ride Safe"
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
Waar te koop
| Verkoper | Prijs | Availability | |
|---|---|---|---|
| Amazon (US) | Actuele prijs bekijken | Op de website bekijken | Prijs bekijken → |
Prijsverloop & trends
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Product Concept & Specifications
Alpinestars (Italy)Engineering & Biomechanical Safety 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.
The Alpinestars SM5 Parelwit is engineered as a high-integrity Dirt/MX protective system, utilizing a structural shell constructed from Polymer. This structural layup is engineered to provide progressive kinetic energy dissipation during impact deceleration, distributing localized shock across outer lamina layers while minimizing deformation transfer into the internal multi-density EPS liner.
Certified to ECE 22.05, DOT protocols, the architecture is subjected to rigorous linear deceleration limits and oblique impact evaluations to mitigate rotational acceleration forces associated with diffuse axonal injury. For a deeper breakdown of rotational thresholds and impact testing speeds, consult our ECE 22.06 vs DOT vs SNELL engineering benchmark.
Internal geometry follows a Intermediate Oval cranial profile, designed to mitigate focal pressure hot spots across the parietal ridges while maintaining uniform radial clamping pressure along the zygomatic arch. Riders seeking optimal retention stability and break-in guidance should review the cranial aspect ratios and head shape guide as well as our 3D cheek pad density protocol.
Shell composite integrity and acoustic sealing are further optimized through channelized EPS porting and aerodynamic laminar profiling. To learn how shell composites resist stress cracking under prolonged environmental cycling, inspect the composite material comparative matrix.
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.
View on retailers
This helmet is linked to product pages on the following retailers. Links can be used for affiliate and as a source for data and images.
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Compatible Motorcycles for the Alpinestars SM5 Parelwit
Calibrated for upright windscreen deflection, all-terrain dust filtration, and long-travel suspension dynamics.
Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.