Burn through the streets with theSpitfire F4 Trippy Swirl Radial 99aWheels. Formula Four Performance Urethane lasts longer, withstands more abuse and performs superior to all other wheels. Designed to combine all the desired properties 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 and smooth 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.

Specs:

• More speed and control on all surfaces
• Unmatched flatspot resistance
• Smooth anti-stick slide
• High rebound compound
• 100% true performance uretha