Spitfire Formula Four Radial Skateboard Wheels are 99a and 101a wheels have a round edge design giving you better control and a responsive slide. Features include a smooth riding surface in a medium profile and constructed with Formula Four Urethane in the Radial Shape. Sizes available (mm): 51, 52, 53, 54, 55, 56. Sold as a set of 4.
Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
Medium - Your classic wheel shape, versatile all-around wheel for street/park skating.
Formula Four Urethane - Unmatched abrasion resistance for fewer flat spots. More controllable grip. Lasting speed no matter the terrain. Smooth anti-slick slide and a longer lasting size and shape.
Radial Shape - Round edge design for control, speed and a responsive slide.
99a - Offers more grip than harder wheels and more slide than softer wheels. Great for slick surfaces when you want more control.
| Size | 53mm | 54mm | 56mm |
|---|---|---|---|
| Diameter (mm): | 53.0 | 54.0 | 56.0 |
| Width (mm): | 33.0 | 34.0 | 35.0 |
| Riding Surface (mm): | 19.5 | 20.0 | 21.0 |
| Suggested Riser Size (in): | N/A | N/A | 1/8 |
