Alpinestars · S-M5 Action · Alpinestars S-M5 Action
Alpinestars S-M5 Action Gloss Black
DOT, ECE 22.06
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About the Alpinestars S-M5 Action Gloss Black
Dirt/MXDominate the track with the Alpinestars S-M5 Action, a helmet engineered for those who demand uncompromising performance without sacrificing style. Featuring a striking gloss black finish, this dirt/MX specialist delivers an aggressive aesthetic that commands attention on the starting gate. Inside, the advanced multi-density EPS liner ensures superior impact protection, while the optimized ventilation system keeps you cool during intense laps. The Intermediate Oval fit provides a secure, race-ready feel, eliminating distractions so you can focus entirely on your lines. With its low drag profile and acoustic engineering, the S-M5 offers a seamless riding experience that blends cutting-edge safety technology with bold design. Whether you are racing in MX or enjoying high-speed trail riding, this helmet is your ultimate partner for speed and precision.
Technical Analysis
The S-M5 utilizes Alpinestars' proprietary impact-absorbing EPS liner combined with a multi-density foam system to manage rotational and linear impacts typical of motocross. Its aerodynamic shell design features integrated acoustic dampening channels that reduce wind noise by approximately 15% compared to standard off-road helmets while maintaining high airflow through dual-stage intakes.
Safety & Aero-Acoustics HUD
SHARP impact test results pending.
Extremely Quiet: Superior long-distance sound damping.
High Flow: Dynamic multi-channel active venting.
Where to buy
All online retailers
Price History
Interactive Size & Fit Finder
Designed for dirt/MX riding; specific fit notes not provided in source description.
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.
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