What Our Gearhead(R) Experts Are Saying: "I use these valves on all my TCS setups. They're durable, never clog, and I love the removable core-it makes adding sealant way easier. They're a must if you're going tubeless."Whether we're setting up a new wheelset or refreshing a trusted ride, WTB TCS Tubeless Presta Valves are the essential link in a reliable tubeless system. Designed with a secure rubber base, these valves seat tightly into any standard Presta valve hole to provide a leak-free seal and smooth airflow during inflation. They're compatible with a wide range of tubeless rim profiles and tires, and the removable core makes it easy to inject sealant or swap out cores mid-ride. With just enough length for most rim depths and a wide rubber grommet that mates cleanly with both curved and flat rim beds, these valves are a simple upgrade that keeps air in and trail stress out.