Spitfire Lock-ins Full Formula Four 99 A
Spitfire Formula Four Lock-Ins Full 99A skateboard wheels combine Formula Four urethane with the widest version of Spitfire’s asymmetric Lock-Ins shape.
The shape features a straight inner edge and a tapered outer profile. The inner edge creates a defined contact surface for curbs and rails, while the outer edge retains its characteristic tapered geometry. The Full version adds a wider profile and a larger contact patch.
The 99A durometer delivers a precise, controlled response. Spitfire’s Formula Four compound offers high resistance to abrasion and flatspots while maintaining consistent performance throughout use.
The Anti-Stick Slide System is designed to deliver smooth, controlled slides. Diameter, width and contact patch vary according to the selected size, while the shape, durometer and urethane formula remain unchanged.
Supplied as a set of 4, the Lock-Ins Full 99A deliver reliable Formula Four performance in a wide, asymmetric shape.
Technical Features
- Spitfire Formula Four urethane
- 99A durometer
- Lock-Ins Full shape
- Wide, asymmetric profile
- Straight inner edge
- Tapered outer profile
- Large contact patch
- Anti-Stick Slide System
- High resistance to abrasion and flatspots
- Set of 4 wheels
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