Spitfire Formula Four Skateboard Wheels - Conical Full - 99 Duro

The Conical Full 99a wheels take the Conical design wider, giving a broader contact patch while still cutting sidewalls to reduce weight. This creates a controllable, all-terrain shape that performs on streets, park bowls, or technical lines. Formula Four urethane delivers speed, smoothness, and resistance to flatspotting.

Key Features:

• Formula Four Urethane: Smooth, fast, flatspot-resistant.
• Conical Full Shape: Wide riding surface with cut sidewalls for lightweight control across all terrains.
• Durable Performance: Maintains roll and shape during heavy sessions.
• Versatile Skateboarding: Great for technical tricks, gaps, and park lines.

Specifications:

• Durometer: 99a
• Shape: Conical Full
• Formula: Formula Four (F4)

Ride fast. Land clean. Roll Spitfire.

About Spitfire Wheels

Founded in 1987 by pro skater Jim Thiebaud and entrepreneur Fausto Vitello in San Francisco, Spitfire quickly became a cornerstone of skateboarding. Known for durable, high-performance wheels and their iconic flaming skull “Bighead” logo, Spitfire helped define street and park skating in the late ‘80s and ‘90s.

Innovation has always been at the core of Spitfire. From early urethane formulas that resisted flatspotting to today’s Formula Four line—renowned for speed, smoothness, and longevity—the brand keeps pushing what skateboard wheels can do.

Part of Deluxe Distribution, Spitfire continues to roll with legendary pros and rising talent alike, creating wheels, graphics, and products that capture skateboarding’s raw, creative spirit. When you ride Spitfire, you’re rolling with heritage, performance, and that unmistakable fire under your board.