Spitfire Lock Ins - F4 99D
- LOCK IN'S SHAPE: Asymmetrical shape and design featuring a conical cut profile opposite a straight edge side. Lock on in.
- Tested by Spitfire Team riders
- Formula Four Performance Urethane lasts longer
- Withstands more abuse
- Superior performance to all other wheels
- Combines all desired wheel properties
- True lasting Performance Urethane
- Developed in Spitfire labs