Ride the fire through the streets with the Spitfire Formula 4 Classic 99a 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 compound that gives a fast/consistent, smooth slide all the way through.

Features:

• Diameter: 58mm
  
• Durometer: 99A
• More speed and control on all surfaces
  
• Unmatched flat spot resistance
  
• Smooth anti-stick slide
  
• High rebound compound
  
• 100% true performance urethane
  
• Holds shape longer