![]() The valve above is from DT Swiss, and measures about 70mm in total length. ![]() One possible hazard to note is that long valve stems can potentially inhibit your ability to remove all of the sealant. KOM only recommends using low-ish viscosity sealants that don’t use large particles, such as Stan’s, Orange Seal, Finish Line, Caffelatex, and Slime tubeless sealant.Ībout 30ml of sealant came out, with a bit of residue left behind. Don’t forget to rinse the injector out with water after use, to keep sealant from drying and clogging the tubing. In the above photos, I was removing sealant from a set of ENVE SES AR 3.4 wheels with Schwalbe Pro One 28mm tires. The plastic one works fine, but I found it started to round out on the inside after several uses (it has flats to match the shape of the valve core). The basic kit includes a plastic valve core tool, but you can upgrade to aluminum for a few dollars more. Why not just manufacture it all in one piece? Just a guess, but logic says it’s to reduce the size of packaging for less waste and cheaper shipping. The syringe has a 60ml capacity, making it appropriate for road and gravel tires, but large capacity MTB and fat bike tires will require multiple injections (and KOM hinted that they’re working on new products to address this).Īll of the pieces easily thread together – but be sure to avoid over-tightening them, Hulk (plastic can crack). The kit originally only used the two longer pieces of tubing, but they added a valve (above, bottom-left), which can manually stop the flow of sealant. There are five pieces in the kit: the syringe, the valve core removal tool, and three tubing pieces. The biggest benefit of the KOM design, however, is the ability to remove sealant before removing your tire – eliminating virtually all of the mess. Injecting directly to the tire eliminates these issues. Others require removal of the core, but still leave a lot of residue inside the valve stem. This requires a very low-viscosity sealant that may not plug holes as effectively, and also tends to leave a lot of sealant residue inside the valve and core (which will sputter out at you during inflation). Why inject sealant all the way into the tire? Some injectors push sealant through the valve core (without removing it). Note that, while we used it for tubeless tires, it will also work with inner tubes, or almost any valve with a removable core. We got our hands on one to try for ourselves, injecting and removing sealant from two different wheel sets. Tubeless gadgets and sealants are multiplying by the day, and KOM is in the game with a new budget-friendly and useful injection tool. The best part? It only costs $12, and works with most sealants and valves. After removing your valve core, a thin tube goes all the way down into your tire to install or remove sealant with no mess. We review the sealant injector system from KOM Cycling.
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