Spitfire Wheels Formula Four Classic Natural (56mm/97d)

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The Spitfire Wheels Formula Four Classic Natural (56mm/97d) is a true staple—OG shape, perfect size, and built with Formula Four urethane that’s proven to hold up under heavy shredding from Pomona ledges to Rosemead transitions. The Classic shape is the gold standard for all-around street and park riding, with a 33.5mm width and a 15.2mm riding surface that offers just enough contact patch to grip without sacrificing that flick-friendly feel.

The 56mm diameter adds a touch more speed and versatility, ideal for riders who want to cruise through rough LA sidewalks and still have the control to snap quick flips at places like Santa Anita Park or Memorial Skatepark. The 97 duro formula hits that balance point—soft enough for a smoother roll on uneven terrain but hard enough to keep your slides slick and your lines precise.

Crafted in San Francisco and backed by decades of testing under the heaviest feet in skateboarding, Spitfire’s Formula Four urethane has become the trusted standard. The Classic shape is lightweight, responsive, and predictable—especially when bombing a hill in Sierra Madre or weaving through a late-night downtown spot. This wheel doesn’t try to do too much—it just does everything right.

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.