Spitfire Formula Four Conical Full Blue 99a Size:54mm Knee/Elbow Saver:

Knee/Elbow Saver:

and wash-and-wear fabric that's tough as nails

Bright polyester laces that pop

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Spitfire Formula Four Conical Full Blue 99a Size:54mm Knee/Elbow Saver:Spitfire Formula Four Conical 99a Wheels are the newest wheel by Spitfire. 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