Spitfire Formula Four 99d Conical Full Blue Skateboard Wheels 2026 size 56

evo.com | Spitfire Skateboard Wheels > The Spitfire Formula Four 99d Conical Full Blue Skateboard Wheels bring "formula" to a whole new meaning. These neon yellow beauties feature Spitfire's legendary Formula Four urethane that strikes the perfect balance between grip and slip with their medium profile and conical shape. Smooth Surface Smooth wheels have less surface friction than treaded wheels and are easier to slide. Conical Full Shape With a wide riding surface and a cutaway design, this shape has unmatched control and lasting speed everywhere. 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. | Spitfire Formula Four 99d Conical Full Blue Skateboard Wheels 2026 - 56