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The Spitfire Formula Four 99a OG Classic Skateboard Wheels have been around the block once or twice, and they do a dang good job of it too.
99a Durometer – More speed and control on all surfaces. Unmatched flatspot resistance. Smooth, anti-stick ride. High-rebound compound.
Formula Four Urethane – Formula Four urethane is unlike any other. Both in the streets and under high-speed stress tests in Spitfire's lab, Formula Four wheels retained more material, coned less and kept their original shapes and sizes longer than any other wheel.
Classic Shape – The #1 shape in skateboarding worldwide - proven for speed and control.
Size (mm) | 52 | 53 | 54 | 55 | 56 | 58 | 60 |
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Diameter (mm) | 52 |