Spitfire Formula Four 99a Trucks Formula Four's exclusive combination of

Formula Four's exclusive combination of High Rebound and Hard Duro produces a faster wheel everywhere

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balance and muscle memory when you use Softrucks

Spitfire Formula Four 99a Trucks Formula Four's exclusive combination ofIn 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