evo.com | Spitfire Skateboard Wheels > The Spitfire 90DU Radial Sapphires Skateboard Wheels deliver the smoothest ride on rough terrain while maintaining that snappy response you crave, thanks to their ingenious dual-durometer design. With a softer 90DU outer layer wrapped around a zippy 101a inner core, these gems (pun absolutely intended) give you the best of both worlds-cruiser comfort with trick-friendly performance. Atlantic Drift Clear Urethane Wide Contact Patch 90DU Outer 101a Inner Core | Spitfire 90DU Radial Sapphires Skateboard Wheels 2026 - 56