The Spitfire Formula 4 Classics retain more material, coned less and keep their original shapes and sizes longer than any other wheel. In addition, with a 60mm size, you can tackle most terrain comfortably!
Featuring an unmatched abrasion resistance for fewer flat spots, more controllable grip, and longer lasting speed no matter the terrain. Formula Four Urethane was developed to combine all the desired properties of a performance wheel without sacrificing any one attribute at the expense of another!
Features:
- Diameter: 60mm
- Durometer: 99A