Spitfire Lock-Ins Formula Four 101 A
Spitfire Formula Four Lock-Ins 101A skateboard wheels combine durable Formula Four urethane with Spitfire’s distinctive asymmetric Lock-Ins shape.
The inner side features a straight edge that creates a defined contact surface on curbs and rails, while the outer side uses a shaped conical profile. This combination provides two different profiles within the same wheel.
The 101A hardness delivers a firm, direct response for precise skateboarding. Formula Four urethane offers high resistance to abrasion and flatspots, while the Anti-Stick Slide System supports smooth, controlled slides and consistent performance over time.
Available in multiple sizes, with diameter, width and contact patch varying according to the selected option. Each set includes four wheels.
Technical Features
- Spitfire Formula Four urethane
- 101A hardness
- Asymmetric Lock-Ins shape
- Straight inner edge
- Shaped conical outer profile
- Anti-Stick Slide System
- High resistance to abrasion and flatspots
- Diameter, width and contact patch vary by size
- Set of 4 wheels
Our picks
Primitive Team Wheels 53mm 100A
Spitfire Wheels Radials Grant Taylor Undead 99 A
Spitfire Classic Formula Four 99A
Spitfire Lock-ins Full Formula Four 99 A
Spitfire Lock-ins Formula Four 99 A
Spitfire Tablets Formula Four 101 A
Spitfire Tablets Formula Four 99 A
Spitfire Conical Formula Four 101 A
Spitfire Conical Formula Four 99 A
Spitfire Conical Full Formula Four 99 A
Spitfire Conical Full Formula Four 97 A
