KOM Cycling

Tubeless Sealant Injector

What Our Gearhead® Experts Are Saying:

"The KOM Cycling Tubeless Sealant Injector is the tool I hand to every rider making the switch to tubeless because the sealant injection step is where most people make a mess and get discouraged. The through-valve design is the key difference from other injectors on the market since it routes sealant past the valve entirely and eliminates the clogging problem that makes traditional methods so frustrating. The shutoff valve and included core tool round out a kit that genuinely covers everything you need."

Tubeless setups have become the standard choice for performance-oriented road and gravel cyclists, and for good reason. The puncture resistance, lower rolling resistance, and ability to run reduced pressure without pinch flat risk are all meaningful advantages on the bike. The weak point in the system has always been maintenance, specifically the process of injecting or refreshing sealant, which traditional methods turn into a messy, valve-clogging exercise that discourages riders from staying on top of it as regularly as they should. The KOM Cycling Tubeless Sealant Injector addresses that problem with a design that rethinks the injection process from the ground up.

The core innovation is the through-valve delivery system. Rather than injecting sealant over the top of the valve stem where it backs up, dries in the valve, and creates airflow restrictions, the KOM injector passes the delivery tube all the way through the valve and into the tire cavity itself. Sealant goes exactly where it needs to go without touching the valve internals on the way in. The shutoff valve on the syringe body gives you precise control over the process, allowing you to position the tube fully before releasing a single drop of sealant.

The 2oz capacity handles a full sealant dose in a single fill, the 3mm delivery tube fits cleanly through Presta valve stems, and the included valve core tool means the entire job from valve removal to final torque is covered by one kit. Compatible with all major low-viscosity sealants, including Stan's No Tubes, OrangeSeal, and Bontrager, the injector integrates into any existing tubeless maintenance routine. A hot water rinse after use keeps it clean and ready for the next service interval, making it a tool that earns its place in any serious cyclist's workshop kit.