Spitfire Lock-ins Formula Four 101 A

Spitfire Formula Four Lock-Ins 101A skateboard wheels combine premium Formula Four urethane with Spitfire’s distinctive asymmetric Lock-Ins shape.

The straight inner edge creates a defined contact surface for curbs and rails, while the outer side features a shaped conical profile. This design gives each wheel two different profiles.

The 101A durometer delivers a hard, direct response for skaters who prefer a precise and consistent feel. Spitfire Formula Four urethane provides high resistance to abrasion and flatspots while maintaining its performance over time.

The Anti-Stick Slide System promotes smooth, controlled slides. Available in multiple sizes, the diameter, width and contact patch vary by selected size, while the Lock-Ins shape, 101A durometer and Formula Four construction remain consistent across the range.

Choose Spitfire Lock-Ins 101A wheels for precise response, lasting performance and controlled slides.

Technical Features

• Spitfire Formula Four urethane
• 101A durometer
• Asymmetric Lock-Ins shape
• Straight inner edge
• Shaped conical outer profile
• Anti-Stick Slide System
• High resistance to abrasion
• High resistance to flatspots
• Set of 4 wheels