Spitfire Wheels Formula Four Bronze Classic White (50mm/99d)

The Spitfire Formula Four Bronze Classic White (50mm/99d) is a clean blend of technical performance and timeless graphic design. On the outer face, the wheel showcases a hypnotic spiral pattern in bronze and black, circling the outer lip in alternating curves that echo Spitfire’s signature Classic Swirl aesthetic. Wrapped tightly around the inner ring is white sans-serif text reading: “SPITFIRE WHEELS · FORMULA FOUR PERFORMANCE URETHANE · 50MM · 99 DURO”—a spec-driven statement that doubles as a subtle badge of honor for those who know.

Flip to the inside face, and things keep it minimal and bold. The graphic reads: “SPITFIRE FORMULA FOUR CLASSICS 50MM” in clean, arched block letters, printed in a muted charcoal tone on top of the natural white urethane. This side’s stripped-back style nods to the legacy of Spitfire's Classic line, letting the performance speak louder than the art.

These wheels are constructed with Formula Four Urethane, Spitfire’s most advanced urethane formula known for unmatched flatspot resistance, superior rebound, and lasting grip without sacrificing speed. The 99a durometer provides a perfect blend of control and slide for technical street skating, ledges, and smooth concrete parks.

The 50mm diameter and Classic Shape profile make this wheel ideal for skaters looking for a lower ride height, quicker acceleration, and enhanced responsiveness. The narrow contact patch of the Classic shape reduces drag and increases maneuverability, especially good for flip tricks and street lines.

Since its launch in 1987 under Deluxe Distribution, Spitfire Wheels has remained one of skateboarding’s most respected names in urethane. With a reputation earned through innovation and a stacked team that’s included legends like Eric Koston, John Cardiel, and Ishod Wair, Spitfire continues to lead the charge with wheels that deliver under pressure. The Formula Four Bronze Classic is a testament to that legacy—fast, durable, and locked in with style.

Stix SGV has proudly served the San Gabriel Valley skateboarding community since the late ‘90s. With three locations across Los Angeles County, we’ve been deeply rooted in the local scene. Our Monrovia shop has been a staple since 1997, followed by our Claremont location in 2014, and our South Pasadena shop opening its doors in 2022. Our mission has always been simple: to uphold skateboarding culture and stay true to our community.