Spitfire Wheels Form Four OG Classic Natural 99D - 53mm

Spitfire's 99 duro wheels are a little softer than the 101 duro formula. This means that the wheels don't slide quite as well, but have more grip and a smoother ride.

The Classic Shape is the number 1 wheel worldwide - proven at high speed and control at the same time.

Spitfire Formula Four Performance Urethane is unlike any other reel. Even under the highest loads, the wheels retain their original shape and size longer than any other wheel. The combination of high rebound and hard duro urethane results in a reel that is fast everywhere - on rough and smooth surfaces. The Hard Duro compound ensures that the reel will not wear out over time. The exclusive non-stick coating of the Formula Four enables fast and smooth sliding without the wheels becoming edgy. The Formula 4 Wheels therefore offer maximum control and constant grip that you can rely on.