Spitfire Wheels Formula Four 99 OG Classic Skateboard Wheels 52mm Arbor Skateboards 53mm diameter with a 99DU

53mm diameter with a 99DU hardness rating

Convert any Independent truck to an inverted kingpin setup for better grind clearance

Set of Four Wheels 99A for all street

axle nuts and kingpin nuts with high density pivot cups

Spitfire Wheels Formula Four 99 OG Classic Skateboard Wheels 52mm Arbor Skateboards 53mm diameter with a 99DUSpitfire Wheels Formula Four 99 OG Classic Skateboard Wheels 52mm Features: Price is for a set of Four Wheels. Highly rated Spitfire Formula Four's True lasting Performance Urethane. 52mm height diameter, 99a hardness rating suitable for all street and ramp terrains. Spitfire's perfect all rounder Classic shape. Renound Spitfire high quality poured 100% urethane. All Spitfire wheels are handpoured, shaped and specifically engineered in San Francisco