The Spitfire Formula Four in either 101Duro (street) or 99 Duro (park). Spitfire Fire got there team members to test the Formula Four wheels and the results show that the Formula fours withstood more abuse and performed superior to all other wheels. The Spitfire Formula Four Urethane was made to withstand flat spotting and withstand heaving skate sessions without wearing down. The Formula fours are truly like no other wheel we have seen before.

Specs:

• Formulated for a harder, faster ride
• Unmatched flatspot resistance
• Smooth anti-stick slide
• More speed and control
• 100% true performance urethane
• Holds shape longer

The 101 Street formula wheels with there exclusive combination of High Rebound and Hard Duro will give you a faster wheel for smooth surfaces that will allow a all round smooth slide that will not sacrifice grip.