Replacement Presta valve cores — silver or black, sold in fives, with a valve tool. When a core sticks, leaks, or won't hold pressure, this is what you swap. Why it works 60-second fix instead of a new tube. If the core works loose or leaks, it usually isn't the tube — it's the core. Swap the core, save the tube. Standard Presta thread. Fits any Presta valve with a removable core, including all Eclipse TPU tubes and most aftermarket tubeless valves. Five in a pack — and a tool. Enough to outlast most tubes, with the right tool to install them. Specs Type Presta / Sclaverand / French / Race valve core Color Silver or Black Pack size 5 cores + 1 valve tool Compatibility All Eclipse TPU tubes and any standard removable-core Presta valve Best for Tube and tubeless riders who'd rather rebuild a valve than replace a tube Mechanics who go through cores faster than tubes The toolbox you'd actually want with you on a long trip What makes Eclipse different Eclipse pioneered TPU inner tubes in 2011 — and we build the small stuff that goes with them to the same standard. Every part is selected and tested to work cleanly with TPU and with the patented all-aluminum Eclipse valve.
