SF F4 99 Live to Burnside 58mm Wheels Spitfire Wheels $ 40.00 Default Title - $ 40.00 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. Spitfire's premium formula four urethane in a classic shape Formula Four Urethane - Resists Flatspotting 58mm Wheel Set of 4. 99a Durometer Classic Shape