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Spitfire F4 Radial 53mm 99a Covert Skateboard Wheels

Spitfire F4 Radial 53mm 99a Covert Skateboard Wheels
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Type Street/Park/Vert
Diameter (mm) 53
Duro (a) 99
Contact Patch (mm) 18.5
Lip Profile Round
Surface Smooth
Bearing Core Centerset
Colour White

Spitfire Formula Four Covert Radials 53mm 99a Skateboard Wheels and an awesome all round size and shape for comfortable transition shredding, faster riding with more control and maintaining a consistant flip and feel. The Radials give you a little more contact patch so you will have more grip to hit features faster. The even radial edge offers a stable, solid roll over the coping and click on for longer more steezy grinds. 


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

Formula Four Wheels retained more material, coned less and kept their original shapes and sizes longer than any other wheel. Formula Four Urethane is made using a 100% pure urethane compound. On the hills, in the streets and parks and in forced flat spot testing in our lab, Formula Four wheels out-performed and resisted flat spots longer with less wear than all other wheels. Formula Four's exclusive combination of High Rebound and Hard Duro produces a faster wheel everywhere. Higher rebound for faster speeds over rough and smooth surfaces. Hard Duro for a harder, faster ride that won't mush out over time. Formula Four's exclusive anti-stick slide gives a fast/consistent, smooth slide all the way through. Slide with confidence start to finish knowing your wheels won't skip or catch mid-slide.

Formula Four gives you the highest level of control and consistent grip you can count on.