ALPINESTARS SMX+ Boots - Black/White/Red Fluorescent - US 5 / EU 38 2221019-1231-38 Replacement Rubber-Mounting Kit The frequency and location of

The frequency and location of the perforation patterns in the high-flo cores creates significant sound scattering in the mid frequencies

No oversized welds that cause excessive heat

Made from high-quality automotive-grade vinyl and molded flexible urethane for durability and comfort

Includes both front and rear pieces

If you are using aftermarket billet steel rotors

ALPINESTARS SMX+ Boots - Black/White/Red Fluorescent - US 5 / EU 38 2221019-1231-38 Replacement Rubber-Mounting Kit The frequency and location ofAdvanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility Front flex area is constructed with a soft microfiber for improving abrasion resistance and natural forwards and backwards movement Flexible accordion microfiber on Achilles gives enhanced natural movement Outside entry exit has stretchable accordion panel for a close fit and ease of entry and removal. Contoured high modulus shin plate