Cal Surf Presents

• Spitfire Formula Four Classic 99a 51mm
• 51mm Diameter
• 99a Durometer

Formulated with all round skateboarding in mind the 99 Duro Formula Four Wheels from Spitfire feature unmatched flatspot resistance, smooth anti-stick slide, high rebound compound and are shaped to last longer. Tested by the Spitfire team, Formula Four are their best skateboard wheel yet. All our skateboard wheels are sold as a set of four.