SPITFIRE Formula Four Classic Natural Wheels 97D – 54mm

Spitfire F4 Classic 54mm Swirl 97a Skateboard Wheels. Tested by Spitfire Team riders, Formula Four Performance Urethanethat lasts longer round edge design for control, withstood more abuse and performed superior to all other wheels. Now updated into a softer 97a duro for skating chunky DIY skate spots and rougher parks to give you even more control.

Wheel Size –  The 54mm size is a great all round street and park size to hold more speed in the flats and better momentum in small transition, while offering a quick and predictable pop, with a more stable lock in to you grinds. A great size for average to full sized humans to flip and grind all the street and park features.

Wheel Shape / Profile: Classic – Spitfire claim this is the #1 shape in skateboarding world wide. And it probably is. This shape first emerged in the early 90’s and has been a popular go-to ever since.  It features a large radius from the bearing seat which produces a fairly narrow contact patch. It is the great all rounder.

Urethane – Formula Four 97A: Spitfire released their new Formula Four wheels a few years ago now. The latest formula was designed for more control when skating rougher DIY spots and tricky street terrain. This means a smoother roll. 97A is considered a softer wheel in the modern skateboarding scene. They are still very hard but with the edge taken off. The 97A formula will provide a little more grip on super smooth surfaces and is a little more forgiving to ride on rougher surfaces.