Ridernip
SM8 RADIUM 2 GLOSS BRIGHT RED WHITE (3012), image 1

Alpinestars

SM8 RADIUM 2 GLOSS BRIGHT RED WHITE (3012)

Helmets - MXSKU AS8301423301256

Variant

Struck-through options are out of stock.

Cheapest we found

$440.00

at TeamMoto

$440.00 lowest$727.99 highest

4 recent in-stock prices · spread $287.99 (65%)

Based only on in-stock prices checked in the last 30 days. 5 stores checked; dates for every store are shown below.

Recorded store prices

Prices we recorded when we last checked each store for this exact variant.

Product details

SM8 HELMETS || SIZE: XS-S-M-L-XL-2XL

The S-M8’s design is coherent to Alpinestars philosophy and shares distinctive themes with other products in the portfolio; a smooth, attractive, profile which is streamlined and free of any external channels and features that might act as a load point in an impact or compromise the overall integrity of the construction. The surface curvature promotes reduced friction on impact, allowing deflection and the most efficient transfer of energy to protect the rider’s head from direct force to the skull and referred to the neck and spinal column. The aperture is designed to accommodate a wide variety of goggles and the air vents in the shell are located to maximize ventilation efficiency. 

1.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’. 

2.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. 

3.The helmet’s shell construction utilizes a highly advanced molding technology with a multi-composite combination:

•3K Carbon, high density carbon outer layer that improves strength and efficiency of energy dissipation over the shell. 

•Uni-directional carbon composite layer that gives significantly greater radial strength around the shell, preventing compression but allowing controlled deflection for reducing transmitted impact energy. 

•Aramid fiber layer which provides critical penetration protection. 

•This combination of layers is given even greater performance with an epoxy resin bonding that offers the best possible strength and energy management; limited outer shell deflection means the energy spreads wider and is better absorbed by the EPS liner.

4. The result of the unique shell lay-up process employed in the S-M8 construction results in extremely effective impact protection. With a fully equipped helmet testing facility, within Alpinestars Racing Development Center, an exhaustive impact research program has resulted in the Supertech M8 returning linear and oblique impact performance which far improves upon current helmet regulation standard limits. For direct, linear, impact by an average magnitude of 41% and for rotational acceleration, oblique, impact performance by an average of 48%.

Price history

Recorded changes for this exact variant.

Step chart of dated store-price observations. Solid lines show confirmed crawl coverage, dashed lines show overdue missed-check spans, and every line stops at the last confirmed price.

  1. 1TeamMoto2 points · last checked 22 Aug 2026
  2. 2XPERT Moto Gear9 points · last checked 22 Aug 2026
  3. 3MASH Direct1 point · last checked 8 Aug 2026
  4. 4MotoHeaven1 point · last checked 21 Aug 2026
  5. 5AMA Warehouse1 point · last checked 22 Aug 2026

Solid steps show periods confirmed by the store’s change-only price history and completed crawl record: if the price had changed at a check, another point would appear. Dashed steps show overdue periods with no completed crawl confirmation. Every line stops at that listing’s last confirmed check and is never extended to today. Prices are not live and may have changed since the last point shown.

How we collect and compare prices
Cheapest we found: $440.00 · TeamMotoJump to comparison