The Stan's Race Day Tubeless Sealant is a high-crystal-concentration tubeless tire sealant developed in collaboration with world-class athletes and their mechanics, targeted at riders preparing for race day or long-distance events. Built on the same proprietary liquid base as Stan's Original Tubeless Sealant, the Race Day formula increases sealing crystal content by 200% and adds XL-sized crystals capable of repairing larger punctures than the standard formula. The sealant must be installed by pouring directly into the tire over the bead - it is not compatible with valve-core injection or syringe-style installation tools. Stan's recommends visually inspecting sealant levels every 2-3 weeks to monitor liquid volume, as the Race Day formula has a faster dry-out rate than the Original. One liter seals up to 16 tires, with per-tire volume requirements varying by tire size - consult Stan's sealant volume charts for tire-specific guidance. Formula contains 200% more sealing crystals than Stan's Original Tubeless Sealant formula Added XL-sized crystals extend puncture repair capability to larger cuts and holes Shares the same proprietary base formula as Stan's Original Tubeless Sealant Must be poured directly into the tire over the bead, valve-core or injector installation is not compatible Stan's recommends inspecting sealant levels every 2 3 weeks to monitor liquid volume Store in a cool, dry place away from direct sunlight and extreme temperatures to maximize shelf life