SPITFIRE FORMULA FOUR CONICAL 53MM 99D (Set of 4)

Spitfire Formula Four Conical 53mm 99D — Set of 4

The street skater's sweet spot. The Formula Four Conical in 53mm 99D is the go-to setup for skaters who want all the benefits of F4 urethane but need a little more grip and forgiveness on real-world terrain. Slightly softer than the 101D, built for everywhere — not just perfect skateparks.

Built with Spitfire's Formula Four Urethane, these wheels feature a smooth riding surface in a medium profile maximizing traction for precise carving. Unmatched abrasion resistance means fewer flat spots, more controllable grip, lasting speed no matter the terrain, and a smooth anti-slick slide with a longer lasting size and shape. At 99D, you get a perfect mix of firmness and rebound for less-than-perfect surfaces — fast enough for technical skating, grippy enough to handle rougher spots without losing control. The Conical shape keeps weight down and response up, making 53mm the ideal all-around size for street and park alike. Sold as a set of 4.

Specs:

• Diameter: 53mm
• Width: 33.5mm
• Riding Surface: 21.5mm
• Durometer: 99D
• Shape: Conical
• Profile: Medium
• Surface: Smooth
• Urethane: Formula Four
• Sold as a set of 4

Grab a set at Stamford Skate Shop — Stamford, CT's local skate shop for Spitfire Formula Four wheels, pro decks, trucks, and everything you need to skate. In-store and online.