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.
Spitfire F4 53mm 99a OG Classics Natural/Orange Wheel Set
Medium - Your classic wheel shape, versatile all-around wheel for street/park skating.
Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
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.
Classic Shape - The original Spitfire wheel designed and shaped by the pros who ride them.
99a - Offers more grip than harder wheels and more slide than softer wheels. Great for slick surfaces when you want more control.