Developed with world-class athletes and their mechanics, Race Day Tubeless Sealant provides highly effective puncture sealing performance to riders of all levels during their own race or long distance event.

Stan's Race Day formula begins with the same proprietary mix in Stan's Original Tubeless Sealant and increases the amount of sealing crystals by 200%. Then, additional XL-sized crystals are added to repair even larger punctures. For best performance, we recommend visually inspecting Race Day sealant in tires every 2-3 weeks to monitor liquid levels.

Cannot be installed through a valve–must be installed directly into the tire over the bead.