Spitfire Formula Four 101a

  The Stoke: Unlike any wheel we have every skated, Formula for are incredibly durable, yet have a buttery, controllable slide.  The Grit: 101A is a little icey, 99a is a little sticky but most prefer it.  Spitfire's Description:  In our labs and most importantly in the streets tested by Spitfire Team riders, Formula Four Performance Urethane lasted longer, withstood more abuse and performed superior to all other wheels. Spitfire Formula Four Urethane was developed to combine all the desired properties of a performance wheel without sacrificing any one attribute at the expense of another. Formula Four's True lasting Performance Urethane comes not from a single benefit, but from a combination of qualities and features that together produce a truly great wheel. Formula Four Performance Urethane is unlike any other. Both in the streets and under high-speed stress tests in our lab, Formula Four Wheels retained more material, coned less and kept their original shapes and sizes longer than a