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 straight inner edge creates a defined contact surface for curbs and rails, while the outer edge retains the shape’s signature tapered profile. The Full version adds a wider profile and a larger contact patch for a solid, controlled feel.
The 99A durometer delivers a precise, predictable response. Spitfire’s Formula Four compound offers high resistance to abrasion and flatspots while maintaining consistent performance, and the Anti-Stick Slide System supports smooth, controlled slides.
Available in multiple sizes, with diameter, width and contact patch varying by the selected option. Shape, durometer and urethane formula remain unchanged across all variants.
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
Our picks
Primitive Humming Team Wheels 101A
Spitfire Conical Full Formula Four 99 A
Spitfire Conical Formula Four 99 A
Spitfire Conical Full Formula Four 101 A
Spitfire Classic Formula Four 93 A
Oj Wheels Elite White Mini 99A
Oj Wheels Elite White Gold Hardline 101a
OJ Wheels Screaming Hand Black Chubbies 101 A
OJ Wheels Mini Super Juice Shin Sanbongi
Ricta Yuri Facchini Reflective Naturals Slim 101A
Powell Peralta Andy Anderson Nano Cubic Dragon Formula 97A
