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Spitfire F4 Conical Full 54mm 99a Skateboard Wheels

Spitfire F4 Conical Full 54mm 99a Skateboard Wheels
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Type Street/Park/Vert
Diameter (mm) 54
Duro (a) 99
Contact Patch (mm) 21
Lip Profile Conical
Surface Smooth
Bearing Core Centerset
Colour Black

The Spitfire Formula Four Conical Full 54mm 99a Skateboard Wheels are awesome park wheels for quick response and less weight. Formula Four Performance Urethane lasts the longest, grips the most consistently and withstands the most abuse! Spitfire Formula Four Urethane has been developed to combine all the desired properties of a high performance wheel without sacrificing aesthetics and all round shred-ability. F4 wheels are more resistant to flat-spots and coning than any other wheels and keep their shape for longer! The Spitfire High Rebound Compound gives you maximum speed, predictable and consistent grip, with no flex. The slightly smoother 99a Durometer feels smoother at the skatepark and on the streets, to hit you lines with epic control. The Full Conical Shape allows a stable lock in for super long grinds and rolls over the coping the best, for a versatile wheels for shredding transition parks, bowls, vert ramps, hectic rails and massive stair sets. 


  • Full Conical
  • 54mm
  • 99a Durometer
  • High Rebound Compound
  • Unmatched flatspot resistance
  • 100% true performance urethane

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.