Formula Four urethane have unmatched abrasion resistance equaling fewer flat spots and a longer lasting wheel that holds size and shape longer.

Features:

• Diameter: 55.5mm
• Durometer: 99D
• Grant Taylor signature design
  
• Packaged with custom printed patch
  
• F4’s 99 duro are formulated for more speed and control on all surfaces
  
• Radial Shape: Round edge design for control, speed and a responsive slide