Spitfire 53mm 99DU Firebolt Bigheads Skateboard Wheels • Spitfire Team Wheels• 53mm• 99DU• Classic shape• Natural urethane• Set of Four• Formulated for a harder-faster ride• Unmatched flatspot resistance• Smooth anti-stick slide• More speed and control• 100% True performance urethane More from Spitfire at Slam City Skates More Skateboard Wheels Spitfire 53mm 99DU Firebolt Bigheads Skateboard Wheels