The Spitfire Formula Four 99d Bighead Black/ Orange Skateboard Wheels deliver a smooth and fast ride that lasts through tons of days riding smooth concrete, rough concrete, and everything in between.
99a Durometer
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More speed and control on all surfaces. Unmatched flatspot resistance. Smooth, anti-stick ride. High-rebound compound.
Formula Four Urethane
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Unmatched abrasion resistance (no flat spots), more controllable grip, lasting speed everywhere, smooth anti-stick slide, longer lasting (holds size and shape longer).
Bighead Shape
Specs
-
Wheel Style:
Park/Street, Cruiser/Filmer -
Durometer:
99
| Size (mm) | 53 | 55 | 58 |
| Diameter (mm) | 53 | 55 | 58 |
| Width (mm) | 33.7 | 34.8 |
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