If you’ve walked the mechanics’ pits at any National or International level event, chances are you’ve seen them: trademark Stan’s black quart bottles with no labels. Look closer and you might have seen strange symbols scrawled all over the bottles in a silver marker, letters and numbers, formula notes by the man himself, Stan Koziatek.

For nearly fifteen years Stan has been quietly formulating a special racing version of our legendary sealant for many of cycling’s most successful teams. Working with athletes who push themselves and their tubeless systems to the absolute limit, we’ve developed a proprietary sealant formula with close to twice the amount of our standard sealing crystals, plus our special “XL” crystals capable of sealing even larger punctures. Stan’s Race Sealant’s combination of large and smaller sealing crystals interlock to form a lattice that not only seals but strengthens and reinforces the area of the puncture, allowing for an entirely new level of sealing performance.

The quantity and size of crystals in this special formula means that Stan’s Race Sealant can only be installed directly into the tire. As a result of its immense sealing capabilities, Race Sealant is not compatible with injector or other valve installation methods. Race sealant should be inspected every 2-3 weeks for best performance. Be sure to rinse race sealant out of used tires intended to be stored/reinstalled.

NEW REVISED FORMULA

We never stop testing our products, looking for ways to refine and improve performance. Since its public release in 2016, our Race Sealant has consistently outperformed the competition in head-to-head comparisons conducted by the press and saved countless races and rides around the world. As happy as we are with its performance overall, we recently discovered a way to allow our Race Sealant to avoid clumping and balling up under even the most extreme conditions, and we’ve begun making this change to all Race Sealant formula going forward

ULTIMATE PERFORMANCE IN ROAD APPLICATIONS

Race Sealant’s sealing power and strength make it the best choice for road/gravel applications, where the higher pressures often overwhelm other types of sealant.

WHAT DOES THIS MEAN FOR THE RIDER?

Better overall performance is the bottom line, but this change further separates Race Sealant from our more versatile standard sealant in a few key ways:

• Even more powerful crystals – The new formula is so thick that you can hear the particles just by shaking the bottle. That means even more flat-stopping performance.
• Just shake and pour – While the new formula is still too thick to inject through valve stems, you no longer need to completely invert the bottle when pouring it, because the newest crystals are capable of floating. Just shake and pour.

SPECIFICATIONS

• Faster and better sealing capabilities to keep you rolling
• Twice the sealing crystals compared to the standard sealant
• Seals larger punctures to get you home or to the finish line
• XL crystals and standard crystals combine to seal larger punctures
• Ride the widest range of conditions and temperatures
• Premium low-viscosity latex stays liquid longer to seal faster
• Safe for the environment
• Comprised of natural materials
• Must be poured directly into tire
• Will clog all valves and injectors instantly
• For best performance inspect sealant every 2 weeks

“Simply put, this is the most effective sealant here. It plugged holes made by a 6mm-diameter screwdriver with minimal fuss, only losing 5 psi from the starting pressure of 30 psi, and holding 30 psi after sealing.“

– Bike Radar