{"product_id":"spitfire-f4-multiball-og-classic-54mm-99a-wheels","title":"SPITFIRE FORMULA FOUR MULTIBALL OG CLASSIC 54MM 99D (Set of 4)","description":"\u003cp dir=\"ltr\"\u003eThe Spitfire Formula Four Multiball wheels bring Spitfire's classic team styling to their industry-leading F4 urethane. Formula Four is the pro standard: more speed and control on every surface, unmatched flat-spot resistance, a smooth anti-stick slide, and a high-rebound compound that — in both street use and Spitfire's high-speed lab tests — keeps its shape and size longer than any other wheel. In short, it lasts, which makes a premium set like this a real value over time.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eAt 54mm, these run the OG Classic shape — Spitfire's original cut-away profile. It features a wider riding surface for extra grip and stability, lightened with cut-away sidewalls to keep the weight down, blending an old-school look with modern performance. The 99a durometer hits the versatile sweet spot: fast and slidey like a harder wheel, but forgiving enough for everyday terrain. Finished in a natural colorway with the Multiball graphic. Sold as a set of four.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eDiameter: 54mm (32.3mm width, 22.2mm riding surface)\u003c\/li\u003e\n\u003cli\u003eDurometer: 99a (marked \"99D\" in Spitfire's branding)\u003c\/li\u003e\n\u003cli\u003eShape: OG Classic (original cut-away; wider riding surface, cut-away sidewalls)\u003c\/li\u003e\n\u003cli\u003eFormula: Spitfire Formula Four (F4)\u003c\/li\u003e\n\u003cli\u003eColorway: Natural\u003c\/li\u003e\n\u003cli\u003eSeries: Multiball (Spitfire team)\u003c\/li\u003e\n\u003cli\u003eMade in: USA\u003c\/li\u003e\n\u003cli\u003eTerrain: Street \/ park \/ all-terrain\u003c\/li\u003e\n\u003cli\u003eBrand: Spitfire Wheels\u003c\/li\u003e\n\u003cli\u003eSold as: Set of 4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003eNeed bearings, trucks, or hardware to finish a build? Grab them at checkout, or ask us in-store and we'll set you up.\u003c\/p\u003e","brand":"Stamford Skate Shop","offers":[{"title":"Default Title","offer_id":46502856982664,"sku":null,"price":54.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0657\/7825\/3960\/files\/Screenshot2026-09-09at11.25.08AM.png?v=1788971190","url":"https:\/\/stamfordskateshop.com\/products\/spitfire-f4-multiball-og-classic-54mm-99a-wheels","provider":"Stamford Skate Shop","version":"1.0","type":"link"}