SF F4 99 Lock In Full 54mm

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
• 54mm Wheel
• Set of 4.
  
• 99a Durometer
• Lock In Full Shape – A Wider version of the Lock In Shape