Spitfire - Formula 4 Radial Full 56mm 99a Nelly Morville Rough Cut

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. Wide profile More traction and stability at high speed so you'll be less likely to slip out of your line.