The Formula Four Conical skateboard wheels are lightweight and poured in Spitfire's rider approved urethane formula. This urethane lasts longer, withstands more abuse and performs better than the competition. Pick which duro you're looking for after assessing the varying attributes, 'cause this is getting technical.
Wide - Wide wheels provide more traction and stability at high speed, so you'll be less likely to slip out of your line.
Smooth - Smooth wheels have less surface friction than treaded wheels and are easier to slide.
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 Shape - A true performance conical shape - hand cut for quick response and less weight.
|razzle mash-up (99d)||99a|
|Riding Surface (mm):||19.5||20.0||20.2|
|Suggested Riser Size (in):||N/A||N/A||N/A|