Spitfire Wheels F4 Radial Black
Size: 52mm
Hardness: 99d
Radial Shape– A round edge with wider riding surface shape. Offers the versatility of the classic shape and the width of a conical.
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.
High Rebound Compound
SIZE | WIDTH | RIDING SURFACE |
50MM | 30.5MM | 18.2MM |
51MM | 31MM | 18.5MM |
52MM | 32.5MM | 19MM |
53MM | 33.3MM | 19.5MM |
54MM | 34MM | 20.5MM |
55MM | 34.5MM | 21MM |
56MM | 35MM | 21.5MM |
58MM | 38MM | 25MM |
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Spitfire Wheels Formula Four F4 Radial Black 52mm 99a