What Our Gearhead® Experts Are Saying: "I use Race Day sealant for events and big days where failure isn’t an option. It seals noticeably faster than standard sealant, especially on larger cuts, but it does require a little more attention between rides. For race day or long-distance pushes, the performance tradeoff is absolutely worth it."When we’re lining up for an event or heading deep into the backcountry with no room for mistakes, Stan’s Race Day Tubeless Sealant is what we trust to keep us rolling. Designed for high-stakes rides, it prioritizes rapid puncture sealing so we can stay focused on pace, lines, and the ride ahead—not trailside repairs. From XC races to endurance gravel grinds, it’s built for moments when reliability matters most. Based on Stan’s proven Original formula but supercharged for performance, Race Day sealant uses significantly more sealing crystals, including oversized particles that plug larger punctures fast. That added sealing power does mean it dries out quicker, so it’s best reserved for race day, events, or shorter service intervals. When speed, confidence, and puncture protection are the priority, this is the sealant we reach for.