What is the SILCA Ultimate Sealant Injector and how does it work?

The SILCA Ultimate Sealant Injector is a 2oz precision syringe designed to add or top up tubeless sealant through the valve stem without removing the tire. Remove the valve core, thread the injector onto the valve, inject the exact amount needed, then reinstall the core. The measured barrel markings let you dispense a precise volume: 60ml for road, up to 120ml for mountain, rather than estimating from a bottle. The injector eliminates the mess and guesswork that comes with funnel-based sealant installation.

Important: this injector is compatible with SILCA Ultimate Tubeless Sealant (the standard injectable formula) only. It is NOT compatible with SILCA Ultimate Tubeless Sealant w/FiberFoam, which requires the separate SILCA Tubeless Replenisher Injector. Compatible with all standard Presta valves. A valve core tool is required for installation. Made in the USA.