The Spitfire Formula 4 Lock-In 101a Wheels are an asymmetrically shaped wheel designed for more control. A conical cut on one side with a straight edge cut on the opposite built for precise lock in grinds. Tested by Spitfire Team riders, Formula Four Perf
Features
- More speed and control on all surfaces
- Unmatched flatspot resistance
- Smooth anti-stick slide
- High rebound compound
- 100% true performance urethane
- Holds shape longer
- 101a durometer
- Asymmetrically shape designed for Lock-In grinds












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