Tubeless Sealant Injector: How-to

Using the KOM Cycling tubeless sealant injector is a cinch. Regardless of whether you’re filling up 29ers on an MTB, or road bike tubeless tires, we’ve got you covered.

Our simple to use tubeless sealant injector is meant for tubeless tire setups, but it can also supplement a clincher tire configuration if desired. Without further ado — let’s jump into this easy to follow guide for using the KOM Cycling tire sealant injector.

 

Step 1 — Valve Core Removal


First, find a suitable place to perform the task at hand. You may make a slight mess the first time around, so choose somewhere like your garage or driveway.

Next, empty the air from your tire by twisting the valve core until it won’t turn anymore. Then, using the included valve core removal tool, remove the valve core from the tire.

This is done quickly by placing the valve core removal tool on the valve core and turning counter-clockwise. Finally, remove the valve core entirely from the stem and set it aside for now.

 

Step 2 — Sealant Injection


Next, pick out your favorite bottle of tubeless tire sealant (we like Stan’s NoTubes). Don’t forget to shake the bottle vigorously before getting started! Take the tire sealant injector and make sure the plunger is pushed all the way to the bottom (this will help prevent bubbles from forming).

Take the narrow end of the sealant injector and place it inside the bottle of sealant, then pull the plunger back to uptake the liquid into the syringe. If bubbles start appearing, simply push the sealant back out until the air bubble is gone and resume uptaking the liquid.

We’ve placed convenient markings along the sealant injector so you can accurately measure the amount of sealant you’re injecting into the tire. You can use the recommended amount on the bottle — but, in our experience, 1 oz for road bike tires or 2-3 oz for mountain bike tires (depending on size) should do the trick.

Make sure your tire stem is in or near the 6 o’clock position. Then, take the narrow end of the sealant injector and drop it straight down into the center of the valve stem until it reaches the tire wall.

Push the plunger all the way down to expel all the sealant from the syringe. For massive tires (like fat-bike tires), simply repeat the process until you have a sufficient amount of sealant in the tire.

Lastly, screw the valve core back into the tire stem that was removed earlier and pump the tire up to the desired pressure. Boom — that’s it! Now you can confidently get back on the road or trail with a tire full of sealant.

 

Step 3 — Topping Up the Tire


One thing to remember is that tire sealant doesn’t last forever. Depending on the climate you ride in and the sealant you use, the time needed before the next round of sealant varies.

Our rule of thumb is to check on the sealant every 2-3 months. Usually, checking in on your tire sealant is a tedious process requiring you to remove your tire and visually inspect the amount of sealant left.

However, with the KOM Cycling tubeless tire sealant injector, the process is way faster and much easier.

Put your valve stem is in the 6 o’clock position, so the sealant pools at the bottom of the tire. Next, remove the valve core and insert the injector, then pull the plunger up and measure the amount of sealant remaining.

Add more sealant if necessary, pop the valve core back inside the stem, pump up the tire — then hit the road.

 

 

Bonus — No More Mess

The best part of using the KOM Cycling tubeless sealant injector is all the time and effort you save. When you use a regular applicator, the process is messy and leaks sealant onto your valve core.

Once the sealant leaks onto the valve core, it fuses to the stem, making it extremely difficult to unscrew later. With our tire sealant injector tool, adding sealant is clean and straightforward — moreover, you’ll never run the risk of having too little sealant to keep your tubeless tires safe.


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