SPITFIRE FORMULA FOUR LOCK INS 52MM 101D (Set of 4)

SPITFIRE Formula Four Lock-Ins 52mm 101D (Set of 4)
Get locked in with precision and power. The Spitfire Formula Four Lock-Ins are designed with a flat outside edge for maximum control on grinds and a rounded inside edge for smooth roll and quick release. At 52mm and 101D hardness, these wheels are all about speed, crisp slides, and technical performance on smooth concrete and park terrain.

Made with Spitfire’s legendary Formula Four urethane, they’re built to resist flatspots, maintain shape, and keep rolling fast session after session. Whether you’re hitting ledges, rails, or transition, these wheels stay locked when you need them most.

🔥 Features:

• Size: 52mm

• Hardness: 101D (fast & hard for technical skating)

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

• Formula Four urethane: superior slide & flatspot resistance

• Set of 4 wheels

Precision shape, legendary urethane—built to lock in every grind and push your skating further.