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Alpinestars approach to the creation of the advanced technology in the Supertech M8 draws on its depth of experience from over half a decade of world class innovation across the spectrum of motorsports and especially, its deep rooted commitment to motocross. As with all other categories of technology that Alpinestars has mastered, bringing a new, highly complex, product to fruition requires specialist experience and know-how and a project plan led by the best brains in protection development. The S-M8 shell has been profiled with performance as a priority and with a design style that identifies the profile of the helmet and its sculpted surface as uniquely ‘Alpinestars’. Another key feature is the S-M8 shell sizing solution; each helmet fit size has its own appropriate shell size to deliver the most anatomical solution for the wide variety of fit needs worldwide.
The Alpinestars S-M8 Radium 2 Helmet combines advanced motocross protection technology with a performance-focused shell profile and distinctive Alpinestars styling. Developed from extensive experience across motorsports, the S-M8 is designed with a focus on anatomical fit, impact protection, and functional adjustability.
The helmet uses four anatomical shell sizes, with each fit size receiving an appropriately sized shell for a more precise fit solution. Its multi-density EPS polymer liner supports the helmet’s protective design, while the patented A-Head system provides fitting height and angle adjustment. The shell base also incorporates a collarbone protection feature.
Additional safety and usability features include the Multi-directional Impact Protection System (MIPS), an Emergency Release System (ERS), and an Eject inflation system fitment inside the crown of the shell. The unique patented visor release system adds another functional element to the helmet design. The Alpinestars S-M8 Radium 2 Helmet is finished in black and white and meets ECE/DOT requirements.
Features:
- ECE/DOT: Meets the stated ECE/DOT requirements.
- Four anatomical shell sizes: Uses shell sizing tailored to different helmet fit sizes.
- Multi-density EPS polymer liner: Provides the helmet’s specified liner construction.
- A-Head fitting system: Patented system for fitting height and angle adjustment.
- Patented visor release system: Unique release system integrated into the helmet design.
- Collarbone protection feature: Incorporated at the base of the shell.
- MIPS: Includes the Multi-directional Impact Protection System.
- Emergency Release System: Includes an ERS for emergency helmet removal.
- Eject system fitment: Provides fitment for an Eject inflation system inside the crown of the shell.
- Color and size: Black and white finish in XS.
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RETURN POLICY 2026
ALL DISCOUNTED AND SALE ITEMS ARE A FINAL SALE !!!
We have a 14-day exchange policy on regular priced items only , ( discounted or sale items are not eligible for return ) , which means you have 14 days after receiving your item to request a exchange.
WE DO NOT REFUND we exchange only ...
PROCESSED ORDERS THAT ARE REQUESTING A CANCELLATION ARE SUBJECT TO A 20% RESTOCK FEE
To be eligible for a exchange, your item must be in the same condition that you received it, unopened or unused, with tags and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a exchange, you can contact us at usaspeedguys@gmail.com. Please note that exchanges will need to be sent to the following address and require an authorization first :
THE SPEED SHOP USA
ATT RETURNS
PO BOX 1254
PEACHLAND BC CANADA
V0H1X0
CANADA POST REGULAR SERVICE
If your exchange is accepted, we’ll send you a return authorization number, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any exchange question at usaspeedguys@gmail.com.
SHIPPING ON RETURNS IS AT YOUR EXPENSE WE DO NOT PAY FOR RETURN SHIPPING
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned LIKE custom order products (such as special orders or personalized items). We also do not accept returns for hazardous materials, flammable liquids, or gases. There is NO RETURNS on lighting or electrical components at all PERIOD . Please get in touch if you have questions or concerns about your specific item.
Unfortunately, WE DO NOT accept returns on sale items, DISCOUNTED ITEMS or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
WE DO NOT REFUND WE ONLY EXCHANGE
European Union 14 day cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days . As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
Exchanges
We will notify you once we’ve received and inspected your return and let you know if the exchange was approved or not. If approved, you will have 30 days to complete your exchange.
If more than 15 business days have passed since we’ve approved your return, please contact us at usaspeedguys@gmail.com
