SPITFIRE FORMULA FOUR LOCK IN FULL 55MM 99D (Set of 4)

Dial in your control with the Spitfire Formula Four Lock-In Full Wheels, built for skaters who demand speed, slide, and long-lasting performance. The Lock-In shape gives you a flat outside edge for extra lock-in on grinds and a rounded inside edge for smooth release, keeping your tricks locked and dialed.

Made with Spitfire’s unmatched Formula Four urethane, these 55mm 99D wheels balance control and versatility—hard enough for solid slide, yet fast and smooth on all surfaces. Designed to resist flatspots, they’re built to last session after session.

🔥 Features:

• Size: 55mm

• Hardness: 99D (great mix of grip & slide)

• Shape: Lock-In Full – flat edge outside / rounded inside

• Formula Four urethane: unmatched durability & flatspot resistance

• Sold as a set of 4 wheels

The choice for skaters who want technical precision and all-terrain reliability. Lock in, roll fast, and never look back.