Choosing an Off-Road Helmet: Alpinestars S-M5 vs Supertech M10
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Alpinestars is best known for boots, gloves and suits, but its helmets are serious motocross (MX) kit too. This guide compares two of them using the specs on Alpinestars’ own product pages: the S-M5 Solid, which is the more accessible option, and the Supertech M10, the carbon flagship. Both are listed as ECE 22.06 helmets.
🛡️ S-M5 Solid: the everyday MX helmet
The S-M5 uses a lightweight thermoplastic shell in three anatomical shell sizes, with a multi-density EPS liner (five densities, according to the page) and a low-friction inner liner surface to address rotational impact. The page cites a 70% score under the ECE 22.06 oblique rating. It weighs 1,350 g in size medium (the ECE version), and sizes run XS to XXL.
🌬️ Visor, airflow and collarbone relief
The S-M5’s long visor directs air into the ventilation ports, and it uses a patented release system designed to release at a pre-set force regardless of the impact angle. There are multiple air inlets and exhaust ports for cooling. Around the chin bar, a raised relief area with a softer EPS extension covered in flexible rubber is meant to reduce collarbone injury risk.
🏁 Supertech M10: the carbon step-up
The Supertech M10 uses a multi-composite shell of 3K carbon and aramid fibre bonded with epoxy resin, a 4-density EPS liner, and 28 ventilation ports. Weight is listed at 1,260 g in size medium, and the shell comes in four sizes. It adds an A-Head Fitment System, which lets you adjust crown height and helmet angle, an Emergency Visor Release and a visor extension against roost and sun. Hydration tube routing is included too.
✔️ Pros
- ECE 22.06 helmets with multi-density EPS liners
- S-M5: lightweight thermoplastic shell, five-density EPS, low-friction liner surface and collarbone relief
- M10: carbon and aramid shell, 28 ports, adjustable A-Head fit
- Visors with emergency or pre-set-force release systems
- Wide size range (XS to XXL) with several shell sizes
✖️ Cons
- These are off-road MX helmets, not road or touring helmets
- The M10 is a premium purchase
- Fit is personal, so try before you commit and check the size chart
- A helmet cannot prevent all injuries, and it needs replacing after a significant impact
💬 Final Verdict
For riders heading off-road, the S-M5 is a sensible starting point, and the M10 is the upgrade for riders who want carbon, a lighter shell and adjustable fit. Whatever you pick, fit matters more than the badge, so measure your head and check the helmet’s current certification on the product page.
👉 Browse Alpinestars helmets and gear here:
https://eu.alpinestars.com/?irclickid=00pxQdRLHxycTCdxNx2iD1PvUkr1Kz0sXWFnRI0&sharedid=&irpid=5788716&utm_source=impact&utm_medium=affiliate&utm_campaign=phuongmmo&irgwc=1&afsrc=1
⚠️ A helmet reduces the risk of head injury but cannot eliminate it. Always check it is correctly fitted and fastened, use certified gear, and replace your helmet after any significant impact or if the manufacturer advises.
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