650C Tube 18 - 25mm with 48mm Presta Valve

The 650B CTube 18–25mm inner tube is a reliable, trail-ready spare designed to keep you moving when punctures happen on mixed gravel and road rides. Built for 650B wheel systems, it offers a dependable fit and consistent performance across a wide range of tire setups.

Made to suit tires in the 18–25mm range, this tube provides a precise fit that helps maintain optimal pressure retention and ride stability. The durable construction is designed to handle the demands of rough surfaces, making it a practical choice for both road use and off-road adventures.

It features a 48mm Presta valve stem, offering compatibility with most modern rims while providing easy inflation access on the go. Compact and lightweight, it’s easy to carry as a spare, ensuring you’re always prepared for unexpected flats on long rides or remote trails.