"Presta valves are the standard and have been around for a LONG time, and there are many issues with this system that many brands have been working hard to address. With tubeless tires being the majority, and Presta valves' proclivity to clog up with sealant, uncsrew, and bend, this is one of the most frustrating aspects of modern tubeless systems, so what's the solution?"
"It's no secret that Presta valves clog, bend, and can unscrew or leak, yet we still use them on almost every bike. The BBB Cycling CoreCap is a simple and effective solution to all these problems, but it isn't reinventing the system. It's using the Schrader valve, a tried-and-tested option, to transform the finicky Presta valve into something more reliable."
Presta valves remain the bicycle standard but commonly clog, bend, unscrew, and leak, especially on tubeless setups where sealant causes blockages. The BBB CoreCap adapts Presta stems to use Schrader-style cores, delivering a claimed 300% increase in airflow and preventing core bending, breaking, and clogging. The CoreCap threads onto Presta stems, is offered in 40, 60, and 80 mm lengths, works with both tubeless systems and tubes, and uses standard pump heads. The product is available as a complete valve stem system or just caps, and is not currently available in North America. Alternative solutions exist but are often more complex or expensive.
Read at BikeMag
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