

Spitfire’s radioactive drop is here to melt the streets—introducing the Classic Formula Four in the searing new Radioactive swirl. Designed for performance and precision, these wheels feature Spitfire’s trusted 99 Duro Formula Four urethane, built to resist flatspots, hold speed, and lock into slides with lasting control.
Available in two killer colorways—53mm in the Black/Blue Swirl and 56mm in Natural—these classics are ready for all-terrain mayhem.
The iconic Classic shape delivers a perfect balance of speed and slide, with a slim riding surface for responsive feel and razor-sharp control. Riders get a 33mm overall width and 16mm contact patch on the 53mm, or bump up to 35mm wide with a 17.8mm contact patch on the 56mm size.
Whether you’re hitting ledges, blasting bowls, or just cruising the urban sprawl, the Formula Four’s unmatched rebound and grip keep you locked in and rolling fast. These wheels aren’t just eye-popping—they’re built to outlast the rest. If you’re hunting down a smooth ride with tech control and classic style, the Radioactive Classic Formula Fours bring the heat. Get lit with the swirl that glows on the go.
SPITFIRE RADIOACTIVE CLASSIC:
- 53MM
- 99A
- Classic Shape
- Formula Four
- Black/Blue Swirl



















