Supertech R10 Crown Pad onlyauto Alpinestars exclusive vulcanized rubber outsole

Alpinestars exclusive vulcanized rubber outsole for superior grip

The Nucleon Flex Pro Ci features an easy-to-use

the knees for high levels of durability

while extensive perforations deliver enhanced ventilation

Supertech R10 Crown Pad onlyauto Alpinestars exclusive vulcanized rubber outsoleReplacement crown pad set for Alpinestars S R10 Helmets, available in multiple sizes. Alpinestars official replacement parts. When selecting your crown pad, please keep in mind that the crown pad varies depending on the helmet size. In addition, the same crown pad can be used within sizes XS and S, or XL and XXL (for example, the crown pad size S is a regular size 10. If you want a tighter fit, then you can choose the crown pad with a size 15 or 20.