The Formula Four Conical Full skateboard wheels feature Spitfire's performance urethane that lasts longer and withstands more abuse than the competition. Pick which duro you're looking for after assessing the varying attributes, 'cause this is getting technical.
Wide - More traction and stability at high speed so you'll be less likely to slip out of your line.
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.
Conical Full Shape - Wider riding surface and cutaway design for unmatched control and lasting speed.
WHITE (101D) 101A
WHITE (99D) 99A
NATURAL/TEAL (97D) 97A
SIZE 52MM 53MM 54MM 56MM 58MM
DIAMETER (MM): 52.0 53.0 54.0 56.0 58.0
WIDTH (MM): 32.5 33.5 34.0 36.0 37.0
RIDING SURFACE (MM): 21.0 21.5 22.0 25.0 27.3
SUGGESTED RISER SIZE (IN): N/A N/A N/A 1/8 1/8 - 1/4