FlatOut Tubeless Tire Sealant — 32oz Pack of 2, Kevlar‑Reinforced Off‑Road Fast‑Sealing

FlatOut QuickStrike is a Kevlar-reinforced, tubeless tire sealant that instantly seals punctures and prevents slow leaks for off-road, ATV, UTV, fat-bike and dirt-bike tires.

Designed for riders and drivers who can't afford downtime, QuickStrike blends a fast-flowing sealing formula with durable Kevlar fibers so punctures up to 1/2 inch are sealed quickly and reliably. This New & Improved off-road formula works in both tubed and tubeless setups and is non-flammable, non-corrosive, and latex-adhesive free for a cleaner, longer-lasting application. Each 32-ounce bag offers a single, long-term fill per tire and this listing includes two bags for multiple tires or future top-ups.

How fast will QuickStrike stop a puncture?

QuickStrike is engineered to move quickly to the breach and form an immediate barrier, minimizing air loss and getting you back on the trail faster. Its fluid matrix delivers sealant to the tread area instantly, while Kevlar fibers lock into the hole to strengthen the repair.

• Seals punctures up to 1/2" in the tread area almost immediately.
• Flows to leaks faster than standard sealants for minimal downtime.
• Works on both tubed and tubeless tires—no extra products required.

Will this work with my ATV, UTV, or fat-tire eBike?

Yes. QuickStrike was formulated for a wide range of off-road applications, including ATVs, UTVs, dirt bikes, and fat-tire eBikes or bikes with tires wider than 3.5 inches. Its consistency and Kevlar reinforcement provide robust protection across these vehicles without creating unwanted residue.

• Suitable for tires wider than 3.5" and standard off-road sizes.
• Non-corrosive and water-washable for easier cleanup and maintenance.
• Safe for use in both tubed and tubeless systems—follow manufacturer fitment recommendations.

How do I install the sealant and how long does it last?

Installation is straightforward: position the valve stem, remove the valve core, inject the sealant with the included tool or hose, then re-inflate the tire. QuickStrike is designed as a one-time application that remains active for the life of the tire, eliminating frequent re-dosing.

• Includes easy valve-core access for fast injection and no mess.
• Water-washable, latex- and adhesive-free formula to avoid gumming or sludging.
• Long-lasting; stays active without drying out for durable protection.

Is the formula safe and practical for routine use?

QuickStrike prioritizes rider safety and convenience with a non-flammable, non-corrosive composition and no sticky latex to complicate repairs. Because the sealant is washable, cleanup is simple and it won’t foul tools or wheels like some competitive formulas.

• Non-flammable and non-corrosive for safer storage and handling.
• Kevlar fibers add strength without creating a sticky residue.
• Removes easily with water if wheel disassembly is needed.

Who is this for? FlatOut QuickStrike is aimed at off-road enthusiasts, trail riders, and anyone running wide-profile tires who values fast, durable puncture protection and minimal maintenance. If you ride ATVs, UTVs, fat-tire bikes or dirt bikes and want a reliable, long-term sealant that’s easy to install and cleanup, this pack of two 32-ounce bags gives you immediate coverage and spare supply for continued confidence on rough terrain.