Spitfire Formula Four 99 Duro Classic Skate Wheels 

The Spitfire Formula Four 99 Duro Classic Skate Wheels are a top-tier choice for skaters seeking fast roll speed, long-lasting performance, and unmatched control. Featuring Spitfire’s signature Formula Four urethane and the tried-and-true Classic shape, these wheels offer the perfect balance of slide and grip. At 99a durometer, they’re ideal for street and park skating, delivering smooth slides without sacrificing traction.

Material: Formula Four urethane
Shape: Classic – versatile, all-terrain shape
Durometer: 99a
Features: Flat-spot resistance, high rebound, smooth slide control, built for speed and durability