Spitfire Formula Four Grimplehead Lock In Full Wheels 99a - 55mm Black

Set of four Formula Four Lock In Full Wheels from Spitfire in 55mm diameter and 99a durometer hardness in black with Grimplehead graphic. 

Features the tried and tested Formula Four urethane for a faster, smoother ride and less chance of flatspots. The new Lock In shape Full features a rounded profile on one side and flatter tablet style shape on the other.