Spitfire Formula 4 features more speed and control on all surfaces, unmatched flatspot resistance, smooth anti-stick slide, high rebound compound. 100% true performance urethane.

Radial Shape: A round edge, medium width riding surface shape. Offers the versatility of the Classic shape and the width of a conical.

This wheel measures 54mm x 34mm with a 20.5mm riding surface and Formula 4 99A durometer.