Spitfire Formula Four Bighead Radioactive 99a 54mm Skateboard Wheels Size:54 membrane and outer material—efficiently fends

membrane and outer material—efficiently fends off moisture

It's the kind of cold protection you bring to the mountain any day of the year

Base - MEGADRIVE XT Die-Cut

Profile: FlatRock

Spitfire Formula Four Bighead Radioactive 99a 54mm Skateboard Wheels Size:54 membrane and outer material—efficiently fendsBust out the blacklight and blow some minds at the skatepark with the Spitfire Formula Four 99d Bighead Radioactive Skateboard Wheels. Spitfire's iconic Formula Four urethane is simultaneously smooth, fast, and tough, paired with the slightly wider Bighead profile a sick Radioactive colorway. Bighead Shape Formula Four Urethane Formula Four urethane is unlike any other. Both in the streets and under high speed stress tests in Spitfire's lab, Formula