Parts & Accessories
Challenge's Valve Extenders screw onto the end of Presta valves to make the valves 42mm longer so that the valves will protrude through wheels with tall rims far enough to be able to attach your pump and inflate the tires. You get two extenders and a wrench for them.
High-performance tubeless systems deserve high-performance tubeless sealant. The SMART Sealant was designed to work with both vulcanized and handmade TLR and Tubeless tires. This non-allergenic, ammonia-free formula can seal up to 6mm cuts, remains liquid in the tire for up to 6 months, doesn't coagulate with CO2 use, and doesn't damage rims or tires with extended use. Installation is straightforward using the application tip and there is no need to shake the bottle. Available in a 250ml/8.5oz bottle.
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