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Deal.ai › Compare

Alpinestars Supertech M10 vs Alpinestars SM3 Solid Helmet

The Supertech M10 is Alpinestars' flagship off-road helmet: a 3K carbon shell, MIPS, four dedicated shell sizes, an eject removal system and a collarbone relief chin bar. The SM3 is the value-oriented model, with a thermo-injected shell, rotational impact protection, a visor release system and DOT plus ECE certification. Owners rate the M10 higher per review, but the SM3 has far more reviews and a strong score. Buy the M10 for serious racing and maximum protection; buy the SM3 for trail and moto days on a tighter budget.

  • Choose the Supertech M10 if you race or ride hard off-road and want the lightest, most protective Alpinestars helmet with MIPS, an eject system and a carbon shell.
  • Choose the SM3 if you want a capable off-road helmet for mixed moto and trail riding, need DOT certification, or want a kids' size.

Prices

  • Alpinestars Supertech M10: $839.95 at biohazardcycles (last seen Nov 13)
  • Alpinestars SM3 Solid Helmet: $229.00 at Amazon (last seen Nov 13)
  • Difference: the Alpinestars SM3 Solid Helmet is $610.95 cheaper than the Alpinestars Supertech M10 at the latest prices (Nov 13)
Alpinestars
Alpinestars Supertech M10

Alpinestars Supertech M10

5(99 ratings)
$839.95at biohazardcyclesChecked Nov 13
See all prices and details
Visit biohazardcycles
Pros
  • Carbon shell keeps weight low for a full-face off-road helmet
  • MIPS plus a smooth shell shape aimed at oblique impacts
  • Eject system helps first responders remove the helmet safely
  • Chin bar relief and soft EPS target collarbone injuries
  • Four shell sizes give a closer anatomical fit
Cons
  • ECE only, no DOT certification
  • Flagship build means a higher outlay than the SM3
  • Fewer owner reviews than the SM3
Alpinestars
Alpinestars SM3 Solid Helmet

Alpinestars SM3 Solid Helmet

4.8(364 ratings)
$229.00at AmazonChecked Nov 13
See all prices and details
Visit Amazon

Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • DOT and ECE certified
  • Rotational impact protection and visor release at a lower tier
  • Available in kids' sizes
  • Large review base with a high average score
  • Multi-density EPS sized to each shell
Cons
  • Heavier than the M10, especially in DOT form
  • Thermo-injected shell instead of carbon
  • Fewer vents and no eject system

What separates them

Alpinestars Supertech M10Alpinestars SM3 Solid Helmet
Shell material3K high-density carbon fiberThermo-injected polymer blend
Rotational protectionMIPS liner plus oblique impact designPatented rotational impact protection
Weight (size M)About 1260 g, 1310 g with side padsAbout 1310 g ECE, 1430 g DOT
Shell sizesFour shells across six fit sizesMultiple shell sizes, size-specific EPS
Ventilation28 ports (18 intake, 10 exhaust)10 inlets, 7 exhaust ports
Emergency removalEject helmet removal system includedNot listed
CertificationECEDOT and ECE
Fit adjustmentA-Head angle and height adjustmentStandard fit

Price history

$749.95$229.00
Nov 6Nov 13
  • Alpinestars Supertech M10: lowest $398.99 on Nov 11 at Summit Racing; $579.95 on Nov 13.
  • Alpinestars SM3 Solid Helmet: lowest $229.00 on Nov 13 at Amazon.

Prices at every store

Alpinestars Supertech M10

  • biohazardcyclesNew

    In stock

    $839.95Checked Nov 13
    Visit biohazardcycles

Also available at

  • AlpinestarsCheck price at Alpinestars
  • AmazonCheck price at Amazon
  • AtoamotosCheck price at Atoamotos

Store links may earn us a commission.

Prices and history →

Alpinestars SM3 Solid Helmet

  • A G Racing LimitedNew

    In stockShips from the UK · duties may applyReturn policy

    $203.00Checked Nov 13
    Visit A G Racing Limited
  • Dune GoonsNew

    In stockReturn policy

    $229.95Checked Nov 9
    Visit Dune Goons
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $229.00Free shippingChecked Nov 13
    Visit Amazon
  • AlpinestarsNew

    Availability unknownReturn policy

    $229.95Checked Nov 13
    Visit Alpinestars

Store links may earn us a commission.

All 4 stores and price history →

Specs compared

SpecAlpinestars Supertech M10Alpinestars SM3 Solid Helmet
sizeLSmall
StyleOff-roadOff-road
DepartmentMen's / UnisexMen's / Unisex
ECE CertifiedYesYes
UseMotorcycleMotorcycle
colorWhite—
Shell3K High-Density Carbon—
SafetyMIPS, patented visor release system, A-Head fit…—
Ventilation19 intake and 5 exhaust ports—
DOT Certified—Yes
For Kids—Yes

What reviewers say

Alpinestars Supertech M10

  • 5 / 599 ratings

Owners of the Supertech M10 generally rate it highly for protection, ventilation and fit, and many call it one of the best off-road helmets they have worn. Complaints tend to focus on price and on wind noise from the many vents.

What people mention
  • VentilationPraisedRiders say the 28 vents keep them cool even in slow, hot motocross conditions.
  • FitPraisedThe A-Head system and per-size shells give a secure, adjustable fit for most riders.
  • NoiseCriticisedThe open venting lets in wind noise at speed, which some riders find loud.
  • PriceCriticisedOwners like the helmet but call it expensive next to mid-range off-road helmets.

Alpinestars SM3 Solid Helmet

  • 4.8 / 5364 ratings

Owners rate the SM3 highly, praising the light feel, the airflow and the secure fit. Complaints center on wind noise and the visor pulling at higher speeds.

What people mention
  • WeightPraisedRiders say it feels light for a certified off-road helmet, which helps on long motos.
  • VentilationPraisedOwners report the many inlets and exhausts move real air when riding hard.
  • FitPraisedThe size-specific EPS and multiple shell sizes give a close, secure fit for most riders.
  • NoiseCriticisedSeveral owners find it loud at speed compared with other helmets.

Questions and answers

Which is better for motocross racing?
The Supertech M10. It is lighter, has MIPS, more ventilation and an eject system, all of which matter in repeated high-speed impacts.
Is the SM3 enough for trail and enduro riding?
Yes. It carries DOT and ECE certification, rotational impact protection and a visor release system, which covers most trail and enduro use.
Which helmet lasts longer?
Neither has a published service life beyond the usual replace-after-a-hard-impact rule. The M10's carbon shell and replaceable liner parts favor long-term durability, while the SM3's lower outlay makes replacement less painful.
Is the M10 worth stepping up to?
If you race or ride aggressively, yes: the carbon shell, MIPS, lower weight and eject system are real safety and comfort gains. For casual off-road riding, the SM3 covers the basics.
Does the SM3 come in kids' sizes?
Yes, the SM3 is listed as available for kids. The M10 is listed as men's and unisex only.
Which has better ventilation?
The M10, with 28 ports against the SM3's 17. The gap shows most at low speeds and in hot, slow technical riding.

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