Spitfire F4 Classic 99D Wheels 56mm hardware and designed to endure harder

and designed to endure harder impacts than traditional steel bearings

flawless fit

Red bottom bushing and blue top bushing

Created using insights from Grant Taylor

Durometer: 78a

Spitfire F4 Classic 99D Wheels 56mm hardware and designed to endure harderThe Spitfire Formula 4 Classics come in at a 56mm diameter and 99a durometer making it a pro wheel stable for skating street, skate parks and bowls! The Spitfire Formula 4 Classics are built to excel with its signature Formula 4 design. Formula Four Urethane was developed to combine all the desired properties of a performance wheel without sacrificing any one attribute at the expense of another! Features: Diameter: 56mm Durometer: 99D