wheel size: 54mm
 
RIDE THE FIRET hrough the streets with the newly introduced, Spitfire Formula 4 Classics 99a Wheels. Designed with your favorite classic SpitfireClassic wheel designs and manufactured with the quality high performance, Formula Four urethane. Formula Four Urethane lasts longer, withstands more abuse and performs superior to all other wheels. Designed to combine all the desiredproperties of a performance wheel without sacrificing any one attribute at the expense of another. Manufactured using a 100% pure urethane compound,Formula Four wheels out-performed and resisted flat spots longer with less wear than all other wheels. Higher rebound for faster speeds over rough andsmooth surfaces with a hard durometer for a smoother, faster ride that won't mush out over time.Designed with an exclusive anti-stick compund that gives a fast/consistent, smooth slide all the way through.