Spitfire Formula Four 99D Radial Skateboard Wheels 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 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
- Set of 4