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 a combination of qualities and features that together produce a truly great wheel. 

• More speed and control on all surfaces
• Unmatched flatspot resistance
• Smooth anti-stick slide
• High rebound compound
• 100% True Performance Urethane
• Classic Shape