Miles Silvas get a signature wheels on Formula 4 99A with the Classic Shape.

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.

Classics Shape: The number 1 wheel in skateboarding. Medium width riding surface with round sidewalls. Designed for control in all situations.

This wheel measures 54mm x 33.6mm with a 16.4mm riding surface and Formula 4 99A durometer.