SF F4 99 Lock In Full 55mm

Spitfire's premium formula four urethane in an asymmetrical shape and design featuring a conical profile opposite a straight edge side. Lock on in.
  • Formula Four Urethane - Resists Flatspotting
  • 55mm Wheel
  • Set of 4.
  • 99a Durometer
  • Lock In Full Shape - A Wider version of the Lock In Shape