Spitfire Formula Four (F4) Classic Wheels 99D | 53mm
Classic Shape – The #1 shape in skateboarding worldwide - proven for speed and control.
101 Durometer – More speed and control on all surfaces. Unmatched flatspot resistance. Smooth, anti-stick ride. High-rebound compound. Spitfire's hardest formula.
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.
High Rebound Compound
SIZE | WIDTH | RIDING SURFACE |
50MM | 30MM | 14.5MM |
51MM | 31MM | 15MM |
52MM | 32MM | 15.5MM |
53MM | 33MM | 16MM |
54MM | 33.5MM | 16.5MM |
55MM | 35MM | 17.5MM |
56MM | 35.3MM | 17.8MM |
58MM | 35.8MM | 18MM |
60MM | 33.9MM | 21.5MM |
*All wheels are sold and packaged as a set of 4.