Alpinestars Supertech R Boots - Black/Red Fluo/White/Gray S1000RR HP4 Double ball bearings on each

Double ball bearings on each linkage to completely eliminate friction

mechanical performance

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Alpinestars Supertech R Boots - Black/Red Fluo/White/Gray S1000RR HP4 Double ball bearings on eachAlpinestars Supertech R Boots Black Red Fluo White Gray Almost every component of the Supertech R Boot, Alpinestars definitive racing boot as worn by a roster of champions past and present, has undergone a rigorous program of upgrades to sharpen its performance features even further. Featuring innovations derived using feedback from Alpinestars involvement in top flight racing, key elements include a newly redesigned front flex area, a redesigned rear