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Alpinestars · S-M5 Action · Alpinestars S-M5 Action

Alpinestars S-M5 Action Gloss Black

DOT, ECE 22.06

About the Alpinestars S-M5 Action Gloss Black

Dirt/MX

Dominate 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.

DOT, ECE 22.06 Intermediate Oval S-M5 Action Family Composite 2 year warranty Motocross Mid Range

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

Awaiting SHARP Audit

SHARP impact test results pending.

ECE 22.06 None
Aero-Acoustics 92 dB

Extremely Quiet: Superior long-distance sound damping.

Ventilation Flow 8/10

High Flow: Dynamic multi-channel active venting.

Double D-Ring 🔊 Comms Ready

Visor Features

Pinlock Ready Optically Correct
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Where to buy

Best price $249.95 Amazon

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Price History

Interactive Size & Fit Finder

Your Head Circumference 57 cm
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Medium
Optimized contours.
Perfect for standard intermediate head profiles.

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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