evo.com | Spitfire Skateboard Wheels > The Spitfire Formula Four 99d Bighead Black/ Orange Skateboard Wheels deliver a smooth and fast ride that lasts through tons of days riding smooth concrete, rough concrete, and everything in between. Formula Four Urethane Unmatched abrasion resistance (no flat spots), more controllable grip, lasting speed everywhere, smooth anti-stick slide, longer lasting (holds size and shape longer). 99a Durometer More speed and control on all surfaces. Unmatched flatspot resistance. Smooth, anti-stick ride. High-rebound compound. Bighead Shape | Spitfire Formula Four 99d Bighead Black/ Orange Skateboard Wheels 2025 - 55
