Spitfire Formula Four 53mm 99A Lock-In Wheels
Set of Four Wheels
Asymetrical shape and design featuring a conical cut profile opposite a straight edge side.
Formulated for a harder, faster ride
Smooth anti-stick slide
More speed and control
100% true performance urethane
Holds shape longer
Formula Four Urethane is made using a 100% pure urethane compound. 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.
Riding Surface: 21.5