{"product_id":"spitfire-april-bighead-rose-f4-radial-54mm-99a-wheels","title":"SPITFIRE FORMULA FOUR APRIL BIGHEAD ROSE RADIAL 54MM 99D (Set of 4)","description":"\u003cp dir=\"ltr\"\u003eThe Spitfire x April \"Bighead Rose\" wheels bring April Skateboards styling to Spitfire's industry-leading Formula Four urethane. This official collaboration combines Spitfire's iconic Bighead identity with an exclusive rose graphic treatment, finished in a standout marbled swirl colorway that no two sets wear exactly alike. Formula Four is the pro standard for a reason: more speed and control on every surface, unmatched flat-spot resistance, a smooth anti-stick slide, and a high-rebound compound that keeps its shape and speed session after session. Every set is hand-poured and engineered in San Francisco, CA.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eAt 54mm, these run the Radial shape — rounded sidewalls with a generous riding surface for a stable, locked-in feel and confident control. It's the do-everything street and park size: low and light enough for technical flip tricks and ledges, with enough roll to keep your speed up. The 99a durometer is the versatile sweet spot: fast and slidey like a harder wheel, but forgiving enough for everyday terrain. 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\u003c\/li\u003e\n\u003cli\u003eDurometer: 99a (marked \"99D\" in Spitfire's branding)\u003c\/li\u003e\n\u003cli\u003eShape: Radial (rounded sidewalls, generous riding surface)\u003c\/li\u003e\n\u003cli\u003eFormula: Spitfire Formula Four (F4)\u003c\/li\u003e\n\u003cli\u003eColorway: Marbled swirl\u003c\/li\u003e\n\u003cli\u003eGraphic: \"Bighead Rose\" (Spitfire x April collab)\u003c\/li\u003e\n\u003cli\u003eMade in: USA (hand-poured, San Francisco)\u003c\/li\u003e\n\u003cli\u003eTerrain: Street \/ park\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":46500469211272,"sku":null,"price":54.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0657\/7825\/3960\/files\/Screenshot2026-09-08at4.40.15PM.png?v=1788903626","url":"https:\/\/stamfordskateshop.com\/products\/spitfire-april-bighead-rose-f4-radial-54mm-99a-wheels","provider":"Stamford Skate Shop","version":"1.0","type":"link"}