The original Stan's sealant injector launched in the early 2000s when tubeless tires held modest volumes and 60ml filled most wheels. Modern mountain tires run 100-140ml, gravel tires push past 60ml, and even road tubeless needs more than a quick squirt. The redesigned Stan's NoTubes Tire Sealant Injector addresses this shift with a 150ml capacity that handles high-volume tires in a single fill, eliminating the refill-and-repeat routine that slowed down tire setups.

The patent-pending drip-free system solves the mess problem that plagues syringe-style injectors. A cross-slit valve in the adapter works with an air-relief channel in the injector body, letting you fill from the top without sealant dribbling out before you're ready. Shake your sealant bottle thoroughly, pour it into the graduated cylinder, and the liquid stays put until you're connected to the valve and pushing the plunger. The top-fill design also means you can see exactly how much sealant you're loading rather than guessing while drawing liquid through a tube.

The press-on adapter fits both Presta and Schrader valve stems without threading or separate fittings. Remove the valve core, press the adapter onto the stem, and inject. The connection seats quickly and releases cleanly, which matters when you're setting up multiple wheels or topping off mid-season. A branded hang plug caps the adapter for drip-free storage in your toolbox or hanging on a workbench peg.... Read More