Race spec Tubeless Sealant from Stan's, one of the best known names in the industry. For replacing existing systems and converting old standard wheel & tyre combinations. An improved formula for faster and better sealing capabilities, the next level in sealing power in the widest range of conditional and temperatures. Featuring twice the sealing crystals compared to the standard sealant and including additional XL crystals. This blend combats larger punctures by interlocking and forming lattice work that not only seals but reinforces the area of penetration. For best results, pour directly into the tyre, valves and injectors clog instantly.