Alpinestars · SM5
阿尔派斯特拉斯 SM5 珍珠白
DOT, ECE 22.05
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Design Story & Interactive HUD
Alpinestars (Italy)The Narrative
征服赛道与崎岖小径，Alpinestars SM5头盔采用醒目的珍珠白配色，为追求无与伦比性能与时尚风格的骑手打造。这款专为越野设计的头盔拥有强悍的气动外形，切割气流，降低阻力并减少风噪，助您在激烈的越野骑行中保持专注。内衬采用速干面料与可调节EPS衬垫，为您提供贴合头型的稳固、赛道级别的舒适佩戴体验。坚固的结构符合严格的安全标准，让您在崎岖地形中挑战极限时无后顾之忧。无论是在技术单车道穿梭还是封闭赛道竞速，头盔通过精准的进气与排气口设计，即使在高温环境下也能保持清凉。以融合前沿科技
Technical Analysis
SM5采用阿尔派纳斯塔斯（Alpinestars）自主的EPS衬里结构体系，采用多密度泡沫构建，以优化下颚和颞部区域的冲击吸收。其空气动力学外壳几何形状被设计以在高速时管理空气流动的紊流，同时在侧向G力下维持结构刚性，典型的摩托车越野竞赛。
Feature Highlights
Extremely Quiet: Superior long-distance sound damping.
High Flow: Dynamic multi-channel active venting.
Intermediate Oval Shape
Intermediate oval fit, the standard ergonomic profile suited for the majority of riders.
Where to buy
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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
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.
Regional Legality Guidance
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